Sunday, May 5, 2013

Carl Gustav 84mm Multi-Purpose 84mm Recoilless Rifle (1948)


Army and Weapons | Carl Gustav 84mm Multi-Purpose 84mm Recoilless Rifle (1948) | Carl Gustav 84mm Multi-Purpose 84mm Recoilless Rifle (1948), The global reach of the Carl Gustav recoilless rifle emphasizes the popularity of the weapon, appearing in three major variants and in use by standard military and special forces alike for some sixty years. The system has been noted from the start for its accuracy, impressive range and firepower since appearing with the Swedish Army in 1948. The system earned its distinct name from the production facility from whence the initial rifles were produced - Carl Gustafs Stads Gevarsfaktori in Sweden - a facility now owned by Bofore.
When introduced, the Carl Gustav was similar in most respects to weapons such as the American Bazooka, British PIAT or German Panzerschreck anti-tank weapons. The Carl Gustav was a recoilless rifle design featuring a rifled barrel which instantly differentiated itself from its contemporaries. The rifled barrel allowed for stabilization of the ammunition to occur through the barrel, negating the need for spring-loaded fins to be used once the projectile reached flight (a popular feature in other systems). This operation allowed the Carl Gustav's projectile greater range and firepower and quickly made it a favorite amongst its users.
Since its inception, the Carl Gustav went on to become a pivotal offensive arm of military forces around the globe (even seeing license-production in Japan with Sumitomo). The M1 appeared in 1948 and was followed by the improved Carl Gustav M2 in 1964. The M3 followed decades later in 1991 and featured a host of improvements, chief among these being a reduction in overall weight in part to the replacement of internal steel components. The Carl Gustav remains in operational service in its varied forms and is a particular favorite with special forces groups including the United States Special Operations COMmand (USSOCOM) units. 

AN/TPQ-36 Firefinding Radar High-Mobility Weapon

 Army and Weapons | AN/TPQ-36 Firefinding Radar High-Mobility Weapon | AN/TPQ-36 Firefinding Radar High-Mobility Weapon Locating Radar System The AN/TPQ-36 Fire finder radar system is used to locate the origin of enemy fire - be it artillery or mortar. The system is a relatively light-weight battlefield component that can detect enemy launches from within a pre-selected 90-degree azimuth sector at any angle, in essence offering up 360-degrees of coverage (through manual positioning). The system can center in on staggered voluminous fire as well as artillery fired simultaneously.
The radar system tracks a 90-degree sector for incoming aerial threats. Once a recently launched target has been reported/acquired, the onboard computer can then pinpoint the relative point of origin of the launched munition based on its initial trajectory. From there, artillery commanders can direct counter-fire towards the suspected enemy position. The system is capable of tracking enemy (and friendly) mortar, artillery or rocket fire as needed. The effective tracking distance is just under 15 miles. The complicated designation breaks down as such: "AN" meaning Army/Navy(Marines); "T" representing the systems transportability; "P" representing its radar nature; "Q" for Special-Purpose/Multi-Purpose; "36" for the units required numerical designation.

AT-13 Saxhorn-2

Army and Weapons | AT-13 Saxhorn-2 | AT-13 Saxhorn-2, Czech CZ vz. 24 bolt-action service rifle in 1924 proved itself through many 20th-century conflicts AT-13 "Saxhorn-2" is an anti-tank missile system is man-portable Russian origin and is a modern form of the original AT-7 "Saxhorn". The main difference between the two systems is a new AT-13s missiles which sport larger dimensions, increased operational range and internal modern technology. It is produced by the KBP Instrument Design Bureau and entered service with the Russian Army in 1992 to serve with mechanical armored units.
KBP has a long history after their founding in 1927 in Tula and the company has gone on to produce a variety of anti-tank, anti-aircraft and anti-infantryweapon systems for Soviet military / Russia. Some countries Soviet / Russian-allied procurement has also moved a relatively new weapon systems to help modernize the power of anti-tank and including Croatia, South Korea, Iran and Syria. The Saxhorn-2 allows for on-the-spot, the point-defense against all types of armored vehicle when he was made to be very portable with thought given to the ease and effectiveness of use.
The Saxhorn-2 system consists of three main components which consist of 9M131F missile, launch tube and 1PBN86 9P151-VI thermal imaging sight. Standard operating crew of three personnel who are well shot action and facilitate transport of Saxhorn-2 system as a whole. Setup of Saxhorn-2 is about 15 seconds for a team of firefighters trained (transported with missile launch tube in place ready to fire) but missiles can only be fired from the standing or prone position.
Because reusable launcher, fire team can actually provide a semi-consistent rate-of-fire three missiles per minute. At least five missiles each team assigned Saxhorn-2 to facilitate reloading launcher fire. Because one of the missiles already in the launch tube with the major carriers, four other re-divided as between the two couples and the remaining personnel is done in addition to their personal weapons. The Saxhorn-2 system measures in at 980mm by 130mm diameter. Weighs about 13.8 pounds. Such as anti-tank missile system other than this class, Saxhorn-2 can also be fixed to fire on vehicles of various types, making for anti-tank weapons platform moves when needed.
The 9M131F missile engine features solid-fuel rocket booster that supplies the operational range between 0.08 and 1.5 kilometers (0.049 to 0.93 miles) - for the safety of the crew, weapons like these generally have a minimum operating range. Speed ​​at the height of the post-launch phase is about 656 meters per second (200 meters per second). Missiles were directed to the target via a wire link (wire-guided) who take orders and corrections have to provide pin-point accuracy relative.

The missile base is limited to the HEAT (High Explosive Anti-Tank) warhead designed to penetrate armor face. When equipped as such, 2-Saxhorn fire team can also launch missiles thermobaric warhead based on the personnel or structure. Thermobaric weapons blast wave expands traditional for adverse effects greater use of oxygen available nearby (as in a fuel-air bomb).
Army Israeli Merkava main battle tanks reportedly met Saxhorn-2s when fighting Hezbollah forces in Lebanon War in 2006. While Russia denies missile system sales to the group, this is believed to be obtained through its own connection Syrian anti-tank systems acquired from Russia. Russia was officially appointed as the 9K115 Saxhorn-2-2 'Metis-M'. AT-13 "Saxhorn-2" is the name of NATO.

Friday, March 29, 2013

Minigun

Army and Weapons | Minigun | Minigun is a term used to describe a type of multiple-barreled rifle, Gatling-derived high-level play with fire usually found external support (IE: Pneumatics, Electrical). The gun may fire several thousand rounds per minute. It's often just use the plane. Miniguns may have to take a few seconds to get the barrel spinning before unleashing a heavy load of lead because if it does not wait, round barrel will cut apart and jam it. It can reach speeds of rotation up to 6000 + RPM (revolutions Per Minute). There are several types of miniguns, the most common being GShG-7.62 Minigun and M134, both fire around 6000 rounds per minute.
The M134 Minigun is a 7.62 mm, six-barrel machine gun with a high rate of fire (2,000 to 6,000 rounds per minute). It features a Gatling-style rotating barrels with an external power source, usually an electric motor. The "Mini" of the name is in comparison to designs that use a similar firing mechanism but larger shells, such as the previous 20-millimeter M61 Vulcan General Electric, and "weapon" for the smaller caliber sizes of guns, typically 20 mm and higher .
"Minigun" refers to a particular model of weapon, originally produced by General Electric. But the term "minigun" has been popular come to refer to any externally-powered Gatling gun caliber rifle. The term is also used to refer to the weapons of the same level of fire and sometimes configuration, regardless of power source and caliber.
The ancestor to the modern minigun was made in the 1860s. Richard Jordan Gatling replaced the hand rotate the rifle-caliber Gatling gun mechanism with an electric motor, a relatively new invention at the time. Even after Gatling slowed down the mechanism, electric-powered Gatling gun only has a theoretical rate of fire of 3,000 rounds per minute, roughly three times the rate of a typical modern gun, single barrel machine. Gatling's electric-powered design received U.S. Patent # 502,185 on July 25, 1893. Despite Gatling's improvements, the Gatling gun fell into disuse after cheaper, lighter-weight, recoil and gas operated machine guns were created.

Tuesday, March 26, 2013

SIG 540

Army and Weapons | SIG 540 | SIG 540 is an assault rifle of the Swiss lines. Used by many soldiers, it is a symbol SIG Sauer, a company from Switzerland. French FAMAS use until replaced by troops Chile, Portugal, and Brazil are also users SIG 540. Many troops in Africa are still using this weapon. The SG540 is chambered for the 5.56x45 NATO round, which was held in a 30-round magazine. It has a high reliability and accuracy. SG 540 is air-cooled, gas-operated, selective fire assault rifle that fires from a closed bolt position. SIG designers used long-stroke piston-driven action (with the recoil spring wrapped around the piston rod itself) and adjustable gas regulator with three settings: "0"-which is used to launch rifle grenades, "1"-which is used in normal operation conditions and "2" are used in extreme environmental conditions or in the presence of heavy fouling. Firearms locked into battery by rotating bolt with two locking lugs heavy steel. Bolt head turned by the control cam picks up the helical slot machines to the bolt carrier.
When the shot was fired, propellant gases from the barrel inserted into the gas tube located above the barrel and put pressure back on the piston rod, which pushed back the bolt carrier. After a number of free travel built into the system to allow the projectile to go, the pressure drop in the residual gas barrels birth to a safe level, which allows the breech to be opened. Cam slot in the bolt carrier to actuate results Camming at stud bolts, rotate the bolt head out of engagement with the locking abutments in the receiver. Extracted the spent cartridge casing extractor claw contained within the bolt assembly while a bulge in one of the internal rail operator manual bolt at the top of the receiver acts as a fixed ejector, remove the casing through the port on the right side of the receiver housing.
The difference between the SG 542 and SG 540 was primarily the result of adopting, more powerful full-size rifle cartridge. SG 542 also uses a box magazine usually 20/30-round (5 and 10 magazines were also produced), but the view is modified by setting m 600 m next to the viewing position Drum 100, 300 and 500.

SG 543 carbine is a short variant of the SG 540 which has been modified with a shorter 300 mm (11.8 in) barrel, a shorter gas tube and piston rods and different handguard and sights with 100, 200, 300 and 400 m positions firing range. SG 543 has no integral bipod of the SG 540/542 and reduced the barrel can not be used to fire rifle grenades. SG 540 served as the basis for SG 541 prototype, which will be 550 SG which entered service with the Swiss Army as Stgw 90 (Sturmgewehr 90).

In addition, two semi-automatic variants produced by Manurhin between the 1970s and the early 1980s specifically for the European civilian market: FSA Manurhin called SIG and SIG Manurhin CSA This rifle chambered in .222 Remington and .243 Winchester respectively. Both are available with either a 5-round or 30-round magazine is reduced, and the choice of folding or fixed stock. The chambering is unusual for this type of military-style rifle was an attempt to comply with regulations in certain European countries imposed restrictions on civilian ownership of "military" cartridges such as the 5.56x45mm or 7.62x51mm NATO/.308 NATO/.223 Remington Winchester

Friday, March 22, 2013

Arctic Warfare .50

Army and WeaponsArctic Warfare .50 | AI Arctic Warfare .50 better known as the AW-50 is basically an improved AI Arctic Warfare to fire .50 BMG caliber ammunition. The AW-50 features anti-reverse system and has adjustable monopod at the back and a folding stock. To mount optics have a MIL Standard 1913 rail machined into the action. The AW-50 is the Arctic Warfare .50, modification of the AS-50 to trigger a bigger housing to fit gloved finger, a small straw bolt to stop the ice from the lock and muzzle brake for reduced recoil and muzzle flash. The AW-50F is the Australian version of the AW-50 with Australian-produced stock and barrel. This is done to take out radar installations, a small, light-vehicles and fortifications. AS-50 and AW-50 variant can use Raufoss MK211 cartridges. This is the standard round for the rifle in Australia.

Tuesday, March 19, 2013

CETME mod.A



Army and Weapons | CETME mod.A | The state of the Spanish company CETME (Centro de Estudios Tecnicos de materiales especiales - Special Materials Technical Studies Center, now known as Empresa National Santa Barbara) was established in 1949 to develop a small arms range of the Spanish army. At the same time arms used Vorgrimler German designer Ludwig, who worked for the famous Mauser Werke in Germany before and during World War 2. Vorgrimler is the designer of the experimental German assault rifle, known as "Gerat 06" or Stg.45 (M). The rifle was not produced in quantity, but the design is presented as a basis for further development in the CETME, and more importantly, in another German company, Heckler & Koch, which obtained a license for the gun design Vorgrimler / CETME around 1957. This deal later resulted in the famous family from H & K weapons, like the G3 and HK33 assault rifles, HK21 and HK23 machine guns, MP5 submachine guns and various other small arms that reached worldwide popularity. All the weapons are built using delayed blowback operating system, designed by Vorgrimler and his men at the Mauser in 1945 and refined by CETME.
 
Initial assault rifle development at the CETME carried around between proprietary cartridge, known as 7.92x40mm CETME. This display bullet cartridges are long and slender, made of aluminum. The overall design was found adequate, but cartridge was rejected for the 7.62x51mm round with lighter bullet and a reduced powder charge. Improved rifle entered serial production in 1956 and was adopted by the Spanish army in 1957. In 1958 CETME introduced a slightly improved design, known as Modelo B or Model 58. The rifle is intended to reduce the burden of fire 7.62x51mm but also could fire the standard 7.62mm NATO, if the bolt and return spring replaced with a set of corresponding sections. In 1964, CETME introduced the Modelo C, which was also adopted by Spanish Army, Navy and Air Force. The rifle was intended to fire only standard, full-power ammunition 7.62x51mm NATO. The main improvement is the 4-position diopter sights (instead of the previous type leaves open sights), wooden handguards instead of earlier steel, bipod was made as a separate part and, most importantly, the room was fluted to improve extraction and avoid torn rims and cartridge case failures in conditions harsh environments. Modelo C rifle stopped production in 1976, and in the 1980s it has been gradually replaced by its 5.56mm derivative, CETME Modelo L assault rifle.All 7.62mm CETME rifles are built around a system of roller delayed Vorgrimlers' blowback. The system uses a two-piece bolt with two rollers. Front bolt part (bolt head) is relatively light and has a bolt face with extractor on it. It also has a hollow cavity in the rear, where an inclined forward end of the rear bolt (bolt body) is inserted. The system has two rollers, inserted from the side of the bolt head and the rest in the sloping front end of the body bolts. When the gun is fired, the pressure began to move the cartridge back against the bolt face. Roller, which extended into the recesses of the barrel extension, began to move into the into the bolt head, due to its sloping of niches.  

This movement translates into the faster rearward movement of the bolt body weight, so that, at the initial moments of shot, when pressure in the chamber is still high, bolt face moves relatively slowly. When the pressure drops to a reasonable level, rollers detach barrel extension completely and from this moment on the bolt head and the bolt body move backward at the same speed, extracting and ejecting spent case and chambering the fresh cartridge on the way back. All CETME rifle firing from a closed bolt. Hammer fired trigger mechanism, and in military versions is capable in semi-automatic mode and full automatic fire. In early models the safety / fire mode selector switch located above the trigger on the right side of the gun. Security model of C / selector switch was moved to the left side of the gun. 

The receiver is made from steel sheet stampings, and trigger housing group, which is hinged to the receiver just behind the magazine. Early models (prior to Modelo C) issued with integral folding metallic bipods and open leaf-type rear sight. The Modelo C rifles issued with wooden handguards and a separate detachable bipods. Rear sights were replaced by the 4-position diopter sights, marked for the 100-400 meter range. All rifles featuring wooden buttstock and folding carrying handle on top of the receiver. The flash hider of the Modelo C rifles set up to accept and launch NATO-standard rifle grenades. Most of the rifles issued to the magazine capacity of 20 rounds and made of steel, but 30 round magazines are also available.

Monday, March 18, 2013

Owen Machine Carbine

Army and Weapons | Owen Machine CarbineThe Owen machine carbine machine gun was invented by Australia 24 years Evelyn Owen. Mutations prototype made primarily Dari .22 rifle parts, have a "Wheel" is operated by The Drum magazine coil spring Yang took 44 bullets and has a trigger Its made from a piece of spring steel languages ​​in Upper Capital wrist. IN June 1941 Owen out the language of AIF and START working on Lysaght That produced the gun. IN September 1941 Owen weapons are READY for testing against similar weapons, American Thompson Hotel, Sten English And German Bergmann. THE FIRST Test Owen proved more accurate and able to classify better pictures. Taxable income and then have a variety of water, mud and sand, Owen proved Yourself nearly impossible to Current Before the weapon while being choked and eventually could not run. Those present agreed that the test AT Owen, Simple Cheapest And the toughest language of sub-machine guns.
IN late 1942, Owen Being used against the Japanese in New Guinea Forest. More Language Of The produced 45,000 Owen weapons during the Second World War, and they Continuously used during the Korean War, Malayan Emergency and in the years-Vietnam War Movements years. The Owen Machine Carbine, or Owen Gun, Review Very much appreciated by collectors Which was lucky enough to have one, some collectors in the U.S. are lucky enough to get a New Examples in the chest or full FTR complete Magazine and New Media * All EQUIPMENT The relevant when the Government Hari sold to Overseas.

Pistol ITU Own Review Very Simple has essentially only three moving parts and prayers eyes, extractor does not count as part of moves such as ITU normally inoperative due to fouling, and was never cleaned and can be removed and NO difference functioniing nil pistol.

Owen Submachine gun turned ON first, since before WW2 Australian Army as England do not see the advantage of a tactical SMG. When WW2 started, Owen reportedly considered. He went to production around mid-1941, about 50,000 New Articles All produced by 1945. Then ia seen used in, the Korean War, Malayan Emergency and Vietnam. Owen ALSO developed in several cartridges like the .32 ACP, .45 ACP and .38 to 200.

Sunday, January 27, 2013

Negev Machine Gun (Israel)

Army and Weapons | Negev Machine Gun (Israel) | Negev Machine Gun Israel, During late eighties IDF requested a development of the 5,56mm light machine gun which could complement reliable, but overly heavy 7,62mm FN MAG machine guns for foot soldiers. The goal was to design a tactical equivalent of the FN Minimi light machine gun,which was tested by IDF but for some reasons was not adopted. First prototypes of the new LMG, developed by Israeli Military Industries Company (now a privately-owned Israeli Weapons Inc) were issued to elite IDF Givati brigade in limited numbers for field testing in 1993.
 
Those early weapons developed a lot of problems with feed reliability and high sensitivity to sand and dust, and further development took about three more years. Starting circa 1996 IMI began to deliver Negev machine guns in limited numbers, and by about 2002 it became more or less a standard issue LMG across the IDF. Negev is favored by Israeli soldiers because it is much lighter and maneuverable than venerable FNMAG, and can be easily manned by single soldier. On the other hand, itis more sensitive to sand and dust that the MAG, and requires more care and cleaning; it also lacks the range and punch of the true GPMG, therefore both 7,62mm MAG and 5,56mm Negev continue to serve in IDF side to side, which obviously is most logical solution.
Negev is a gas-operated, air-cooled light machine gun. It features quick-detachable barrels, with two barrel sizes available –Standard (long) and Commando (short).  Negev machine gun utilizes long-stroke gas piston system located below the barrel. Gas system is fitted with three-position gas regulator, with first (minimum) position used to fire when fed from magazines, second when firing from belts in normal conditions and third – when firing belts under adverse conditions. The gas regulator setting also affects the cyclic rate of fire (position #1 – lowest rate, #3 – highest). The gas piston is attached to the bolt group by dual operating rods, running at either side of receiver, to provide necessary clearance for centrally mounted magazine housing. Barrel locking is achieved by rotating the bolt with four massive radial lugs which engages the cuts in the breech of the barrel.
 Firing is from open bolt, and gun provides selective fire capability through three-position manual safety-fire selector,located on the left side of the pistol grip. Negev machine gun features dual feed system, so it can alternatively use standard disintegrating belts or detachable box magazines. Belt feed unit is installed on the top of receiver, with belt feeding direction from left to right. Belt feed is operated by the side-mounted swinging lever,which is operated by cam track cut in the side of the bolt carrier(system somewhat similar to that used in post-WW2 Czechoslovak machine guns). Magazine housing is located below the receiver, with magazine being inserted vertically up. Ejection window for empty cases is at theright side of receiver, just below the empty link ejection window. 

By default, magazine housing will accept proprietary box magazines originally designed for 5,56mm Galil assault rifle,with 35-round capacity. An adapter can be installed in magazine housing to use STANAG-compatible (M16-type) 30-round magazines. Belts are usually fed from semi-rigid “assault pouches” with 150- or 200-round capacity. These pouches are clipped to machine gun below the receiver, using special projection at the top which is inserted into magazine housing and locked there using magazine catch. Early pouches were of circular (drum) shape, but later these were replaced with more rigid and reliable pouches of semi-circular shape. When not in use,magazine housing is protected by spring-loaded dust-covers.

Standard furniture includes polymer pistol grip, polymer handguard, and a side-folding Galil-type skeletonized buttstock. A lightweight detachable folding bipod is attached to the gas tube. It is interesting to note that when fitted with short (Commando) barrel and box magazine, and with bipod removed,Negev represents a formidable assault rifle, although it is somewhat heavy by rifle standards. It can be used as an effective CQB weapon,providing high maneuverability in confined spaces, with added benefit of serious firepower, thanks to its relatively heavy and quick-changeable barrel.

FN Minimi M249 and Mk.46 Model

Army and Weapons | FN Minimi M249 and Mk.46 Model | The Minimi light machine gun was developed by the famous Belgian company FN Herstal, in the late 1970s and early 1980s. Mass production began in 1982 in Belgium,and at about the same time it has been adopted by the US Armed forces as theM249 Squad Automatic Weapon (SAW). Since its introduction Minimi has seen widespread service, and numerous variations have been developed. First, the Para(Paratroop) version came out, with shorter barrel and tubular telescoped butt.
This gun traded off some of the range and firepower for compactness and maneuverability. Quite recently, an SPW version was developed, which featured a Para-type buttstock, a barrel of intermediate length (between standard and Paramodels), and a Picatinny-type rail mount, which allows a wide variety of sights and scopes to be mounted. To save weight, the magazine feed option of the standard and para models has been discarded. This version, in a slightly modified form, was adopted by the US Special Forces Command (US SOCOM) as theMk.46 model 0 light machine gun. The FN Minimi has an excellent reputation on reliability and firepower, and the latest reports on failures ofM249 SAW weapons in Iraq are attributed to the age of the weapons used - most of the current issue M249 in US Army are more than 10 years old and quite worn out.
Technical description.
 The FN Minimi / M249 SAW is an air cooled, gas operated, belt fed, automatic weapon. The Minimi is operated using conventional gas action with the gas piston located below the barrel, and the barrel is locked using the traditional rotary bolt. The barrel is quick-detachable, and has a carrying handle attached to it,to help for quick replacement procedure. The M249 has an alternative feed system, which allows to use disintegrating metallic belts as a primary feed option, or M16-type box magazines as a back-up feed option. The belt is feed using the top feed unit, the magazines are inserted through the magazine port,located at the left side of the receiver and angled down. The Flip-up dust cover closes the magazine port when it is not in use, serving also as a belt guide.
When magazine is in place, this cover raises up and closes the belt-way to avoid dual feeds and jams. Since the belt feed uses additional power to pull the belt through the gun, the rate of fire with the belt is somewhat slower (750 rpm)than the rate of fire with magazine feed (1000 rpm). The latest SPW and Mk.46mod.0 versions of the Minimi have no magazine feed module as a weight-saving measure. The belts are fed from special 200 rounds plastic boxes that can be clipped beneath the receiver. All Minimi versions fire from open bolt to ensure optimal barrel cooling between bursts. The folding bipod is mounded under the gas chamber, and the gun has provisions for tripod or vehicle mountings. The open sights are standard, with the availability of vide variety of optical and night sights for SPW and Mk.46 versions with Picatinny rails.

Tuesday, January 1, 2013

Cheytac M200 LRSS

 Army and Weapons | Cheytac M200 LRSS | Cheytac M200 LRSS,  When the designers first started work on the rifle, the cartridge on which to base the rifle was in debate. Existing rounds, namely the .338 Lapua Magnum and the .50 BMG, were candidates, but eventually a new round was created, the .408 Chey Tac. Once the cartridge was designed, work was started on the rifle, which was built around the .408 Chey Tac cartridge.
The M200 was once available only to goverment purchasers, and a purposely made less accurate variant (the M200 Civilian Intervention Version, CIV) was sold to civilian purchasers because Cheyenne Tactical believed the standard M200 was 'too accurate' for civilians and they reportedly 'did not want their incredible technology to fall into the wrong hands'. However, Cheyenne Tactical stopped production of the CIV and the standard M200 is now available for civilan purchase because Cheyenne Tactical apparently realized that voluntarily supporting govermental supremacy is not a good business strategy. 
he first step in designing the M200 was creating the cartridge. Existing rounds, namely the .338 Lapua Magnum and the .50 BMG, were candidates, but eventually a new round was created, the .408 Chey Tac. Once the cartridge was designed, work was started on the rifle, which was built around the .408 Chey Tac cartridge. The rifle has an integral bipod, folding stock, and a seven-round removable magazine. Lastly, the Advanced Ballistic Computer is used to determine the wind speed, elevation, and other factors, which is then transmitted to the rifle. The rifle is then able to be fired accurately at ranges of over two miles. 

M1911 Pistol

Army and Weapons | M1911 Pistol | The M1911 Semi-Automatic Pistol is a single action short recoil-operated semi-automatic pistol, chambered in .45 ACP. It features a 7 round magazine and has an effective range of approximately 50 meters. The M1911 produced by Colt was the standard sidearm of the U.S. military from 1911 to 1985.  The history of the Colt M1911 began in early 1900s, when famous designer John M. Browning began to develop semi-automatic pistols for Colt's Patent Firearms Manufacturing Company. In 1905, Browning designed two .45 cal. semi-automatic pistols in response to government interest in a higher-caliber sidearm to replace the standard-issue .38 cal. 
Revolvers then in use (primarily the Colt M1892). The two designs were hammer and hammerless versions of the same basic design and show a clear resemblance to the M1911. In 1906-1907 the U.S. military tested several semi-automatic pistols including designs from Colt, Luger, Savage, and others. These weapons were deemed unsatisfactory for military use and the competitors were asked to improve their designs in anticipation of new trials in 1910. The Colt Model 1905 remained a popular civilian pistol. 
However, Browning and Colt spent the next three years engineering improvements to the Model 1905. In 1911, after further extensive testing, the new pistol and its cartridge were adopted for U.S. military service as the M1911. Prior to and during World War I, more than one million of these guns were manufactured by Colt, Springfield Armory, Remington UMC, Burroughs, Savage, and others.  The rights to manufacture Colt/Browning design were also sold to some foreign countries, such as Norway and Argentina.  The M1911 is a short-recoil operated, locked breech, semi-automatic pistol. It has a single action trigger with a frame-mounted safety that locks the hammer and slide. The hammer can be locked by the manual safety in the cocked position only. An additional "grip" safety is incorporated into the rear of the grip that locks the trigger when the gun is not held in the hand properly.
The barrel and slide are interlocked via lugs on the upper part of the barrel, just ahead of the chamber. After firing, the barrel and slide recoil for a short distance, before the rear part of the barrel is lowered by a tilting link that separates the barrel from the slide. The slide continues back, extracting and ejecting the spent case, compressing a recoil spring located under the barrel, and cocking the hammer. The recoil spring then returns the slide and barrel to battery, chambering a new round on the way back. When the magazine is empty, the magazine follower activates the slide stop, locking the slide in the open (rear) position. The gun is fed from a single stack, seven-round magazine. The magazine release button is located on the left side of the frame, just behind the trigger guard.
8 round magazines are also available for the M1911, and some variants offer "double-stack" magazines that hold 14 rounds. Recoil operation is based on the law of conservation of momentum (Newton's Third Law, commonly paraphrased as "every action has an equal but opposite reaction"). In a recoil-operated firearm such as the M1911, the momentum of the projectile traveling forward out of the barrel is balanced by an equivalent recoil force acting on the barrel/slide assembly in the rearward direction. 

A recoil-operated self-loading firearm depends on proper "tuning" of the projectile's momentum (its mass multiplied by its velocity) so that there is sufficient recoil force generated to perform the extraction, ejection, and chambering of the next round. Optimal operation of a standard M1911 occurs with the use of .45 ACP ammunition weighing 230 grains traveling at approximately 250 meters/second. 

Modern Gov't/1911 variants may differ, more or less, from this description: some guns may have widebody frames that can accept dual stack, high capacity magazines; frames could be made from steel, aluminum alloys or polymer; some could have Double Action or even Double Action Only triggers, ambidextrous safety switches and slide stops, and other modifications. There are compact variants of the M1911, and variants of the M1911 that are different calibers; 9x19mm Parabellum variants are fairly common. The Colt Delta Elite is a M1911 modified to accept the 10mm Auto cartridge. 

Sunday, December 2, 2012

AR-15


Army and Weapons | AR-15 | The AR-15 is a modular weapon system, primarily manufactured by Colt and several other companies. It is the basis for the M16 series of service rifles currently in use by the U.S. military, the C7 and C8 series of service rifles currently in use by the Canadian military, and for many semi-automatic rifles currently manufactured by several companies.  Most AR-15 models generally utilize the semi-automatic fire control group - the selector switch has options for SAFE and FIRE. These weapons are found with a modified hammer assembly, a modified disconnector, a modified trigger assembly, an unmilled shelf in the lower receiver (sometimes blocked to prevent the installation of a drop-in auto sear.

 particularly on rifles produced during the 1994 Federal Assault Weapons Ban in the U.S.), and they lack an auto sear. On the hammer, there is no notch for the auto sear to catch when the carrier cycles back. The selector switch allows the sear on the trigger assembly to catch the hammer as the bolt carrier cycles rearward, preventing the hammer from re-engaging the firing pin and firing another round until the trigger is pulled again.  To further prevent conversion to full auto, some manufacturers use bolt carriers modified to prevent engagement with an auto sear, if one were to be installed; approximately 1.25 inches of steel is milled off the rear part of the carrier, preventing the auto sear from releasing the hammer to fire again.
AR-15
Country of origin : United States of America
Designer : Eugene Stoner
Weapon type : Assault rifle
Manufacturers    : Colt, Colt Canada (formerly Diemaco) Fabrique Nationale, Bravo Company Manufacturing, Lewis Machine & Tool, Noveske Manufacturing, Smith & Wesson, Daniel Defense, Armalite, Bushmaster, DPMS (Panther Arms), Stag Arms, Spike's Tactical, Windham Weaponry, Oberland Arms, Astra Arm, various other manufacturers

Rifles manufactured for export or military sales have the automatic fire control group; the selector switch has options for SAFE, SEMI, and BURST (or AUTO). These weapons are found with the M16 hammer assembly, the M16 disconnector, and a trigger assembly that allows for the auto sear to function as intended in conjunction with the auto selector switch. The M16 lower receiver has a section of its shelf milled lower to accommodate the auto sear, and an additional hole (the sear hole) is drilled into the lower receiver to hold the sear in place.

KAC SR-16


Army and Weapons | KAC SR-16 | The SR-16 is a lightweight, magazine-fed, gas-operated, air-cooled, and shoulder-fired carbine. It features a 14.5 inch chrome-lined, ball milled, lightened barrel, and uses a mid-length gas system. Like the AR-15, it features an inline gas piston system which operates on expanding gas, using the pressure generated by the gas inside the hollowed-out bolt carrier to cycle the weapon. 
 
It features the KAC improved E3 bolt and barrel extension for greater parts life, and the improved bolt carrier (termed "Carbon Cutter") which is more resistant to fouling in adverse conditions. The SR-16 also features a pressure reduction buffer to reduce vertical recoil, a two stage match trigger, ambidextrous controls (magazine release, bolt release safety switches), and a SOPMOD style collapsible stock. It also comes with the URX rail (Upper Receiving Free Floating Rail System).
The SR-16 is a lightweight, gas-operated, magazine-fed, air-cooled, shoulder-fired weapons. They feed from box magazines, most of which are either the 20-round or 30-round variety (each variety, save for the 5-round magazines, should be downloaded by two rounds - 28 for 30, 18 for 20, etc. This makes it easier to load on a closed bolt). The magazines are the same magazines that the AR-15 uses. SR-16 rifles feature a bolt catch mechanism that holds the bolt open upon firing the last round in the magazine.
The magazine is inserted straight into the magazine well, and firmly pushed until a "click" is heard. Give the magazine a slight tug to make sure it does not come out. If the bolt is locked open, simply press the serrated "paddle" portion of the bolt catch in with the thumb to close the bolt and chamber a cartridge. If the bolt is closed, pull the charging handle to the rear and let it slingshot forward. The forward assist should not be needed unless the weapon isn't properly lubricated and is dirty. At this point, turn the selector switch to the mode of fire of choice (semi, auto), and fire the weapon. Once the magazine is empty, the bolt will lock open. It is good practice to always check the chamber for any obstructions prior to reloading.

Tuesday, November 13, 2012

M240 Refile

Army and Weapons | M240 Refile | M240 was adopted by the U.S. military in 1977. The M60E4 (Mk 43 set by the U.S. Navy) was pitted against the (then called) M240E4 the Army trials in the 1990s for infantry medium machine gun new, in the competition to replace the decades M60s. M240E4 win, and then classified as the M240B. This led to 1000 existing M240 sent to FN for repairs and a special kit that modified them for use on ground (such as stocks, rails, etc.). This led to procurement contracts in the late 1990s for all-new M240B.

 
However, new features are added, hydraulic buffer system to reduce fear as incorporated in the M60. While the M240B had been more reliable in the tests, it's a few pounds heavier than the M60E4, and there is a program underway for a new medium-light machine guns in the early 2000s. The Army M240 converted M240B configuration should not be confused with a large number M240D converted into M240G configuration for the Marine Corps.

 

Family Of M240 REFILE
 M240B
 M240C
 M240D
 M240G
 M240H
 M240L

 
Clearing the weapon is done by ensuring the bolt locked to the rear and the weapon is on safe. Feed tray cover is then lifted, the remaining belt (if any) are swept out of the feed tray, the feed tray is lifted to visually inspect the back of the barrel and bolt face. Any links or brass casings removed. The weapon is now clear. In the rare event that the cycle of life is on the bolt face, knocking it loose with a cleaning rod or another rigid object. If there is a live round lodged in the barrel, the operator must immediately decide if the barrel is hot enough that there was a chance to cook off. If anything, he will immediately move his face away from the opening gun. 
 
He then had to wait for the barrel to cool before attempting to remove it. In many cases, attempting to remove the barrel will cause the round to detonate as soon as the barrel is opened by the recipient. Operators can also try to extract the round by taking the weapon off of safe, pulling the trigger and pull back on the charging handle. It has a fair chance of causing a firearm, so care must be taken to ensure that the weapons are pointed toward safe first.