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Date Added: Wednesday 15 December, 2010

by U.S. Citizen


The M82 (also sometimes designated by the military as the M107) is a recoil-operated, semi-automatic

anti-materiel rifle developed by the American Barrett Firearms Manufacturing. A heavy SASR (Special

Application Scoped Rifle), it is used by many units and armies around the world. It is also called the

"Light Fifty" for its .50 caliber BMG (12.7 mm) chambering. The weapon is found in two variants—the

original M82A1 (and A3) and the bullpup M82A2. The M82A2 is no longer manufactured, though the XM500 can

be seen as its successor, in that it also employs a bullpup configuration.

Contents [hide]
1 Overview
2 M82 to M107
2.1 Barrett M107CQ
3 Technical description
4 Users
5 U.S. designation summary
6 Specifications
6.1 M82A1
6.2 M82A2
6.3 M107
6.4 XM500
7 See also
8 References
9 External links

[edit] Overview

The original Barrett M82. Note the different design of the muzzle brake and shoulder stock.Barrett

Firearms Manufacturing was founded by Ronnie Barrett for the single purpose of building semi-automatic

rifles chambered for the powerful 12.7×99mm NATO (.50 BMG) ammunition, originally developed for and

used in M2 Browning machine guns. Barrett began his work in the early 1980s and the first working rifles

were available in 1982, hence the designation M82. Barrett designed every single part of the weapon

personally and then went on to market the weapon and mass produce it out of his own pocket. He continued

to develop his rifle through the 1980s, and developed the improved M82A1 rifle by 1986.

The first conventional military success was the sale of about 100 M82A1 rifles to the Swedish Army in

1989. Major success followed in 1990, when the United States armed forces purchased significant numbers

of the M82A1 during operations Desert Shield and Desert Storm in Kuwait and Iraq. About 125 rifles were

initially bought by the United States Marine Corps, and orders from Army and Air Force soon followed.

The M82A1 is known by the US military as the SASR—"Special Applications Scoped Rifle", and it was

and still is used as an anti-matériel weapon and explosive ordnance disposal (EOD) tool. The long

effective range, over 1,500 metres (4,900 ft), along with high energy and availability of highly

effective ammunition such as API and Raufoss Mk 211, allows for effective operations against targets

like radar cabins, trucks, parked aircraft. and the like. The M82 can also be used to defeat human

targets from standoff range or against targets behind cover. However, anti-personnel use is not a major

application for the M82 (or any other .50 BMG rifle, for that matter). There is a widespread

misconception that a number of treaties have banned use of the .50 BMG against human targets, and

recruits have been advised by generations of drill instructors to only aim a .50 BMG at an enemy

soldier's web gear or other equipment worn on his body.[citation needed] However, the U.S. Army Judge

Advocate General's office has issued a legal opinion that the .50 BMG and even the Raufoss Mk 211 round

are legal for use against enemy personnel.[citation needed]

Further development led to the M82A2 bullpup rifle in 1987, which was a reduced-recoil design to be

fired from the shoulder. It failed to make an impression on the world firearms market, and was soon

dropped from production. However, in 2006, Barrett completed development of the XM500, which has a

bullpup configuration similar to the M82A2.

M107, almost identical to the M82A1M/A3.The latest derivative of the M82 family is the M82A1M rifle,

adopted by U.S. Marine Corps as the M82A3 SASR and bought in large numbers. This rifle differs from

M82A1 in that it has a full length Picatinny rail that allows a wide variety of scopes and sighting

devices to be mounted on the rifle. Other changes are the addition of a rear monopod, slightly lightened

mechanism, and detachable bipod and muzzle brake.

Another variant of the original weapon is the M82A1A Special Application Scoped Rifle, an almost

identical model but specifically designed to fire the Raufoss Mk 211 Mod 0 round, a type of API (Armour

Piercing Incendiary) ammunition.

Barrett M82 rifles were bought by various military and police forces from at least 30 countries, such as

Belgium, Chile, Denmark, Finland, France, Germany, Greece, Italy, Jamaica, Mexico, the Netherlands,[2]

Norway, the Philippines, Saudi Arabia, Spain, Sweden, Turkey, the United Kingdom, the United States, and

others. The M82 also is widely used for civilian .50 caliber long range shooting competitions, being

fired accurately out to 3,000 feet (910 m) and even further.

The United States Coast Guard Helicopter Interdiction Tactical Squadron uses a version of the Barrett

M82 to disable the engines of go-fast boats carrying illegal drugs. Similarly, Barrett M82 rifles have

attracted attention from law enforcement agencies; they have been adopted by the New York City Police

Department. If it becomes necessary to immobilize a vehicle, a .50 BMG round in the engine block will

shut it down quickly. If it is necessary to breach barriers, a .50 BMG round will penetrate most

commercial brick walls and concrete blocks.

According to the documentary The Brooklyn Connection, M82s smuggled into Kosovo by sympathizers in the

United States have quickly become popular long range sniper rifles in the Kosovo Liberation Army. In

Northern Ireland during the 1990s, the South Armagh Brigade of the Provisional Irish Republican Army

(PIRA) used Barrett rifles against the British Army and the Royal Ulster Constabulary police.

As a side note, the Barrett M82A1 rifle was used in 2002 as a platform for the experimental OSW

(Objective Sniper Weapon) prototype. This weapon was fitted with a shorter barrel of 25 mm caliber, and

fired high explosive shells developed for the 25×59 mm OCSW (Objective Crew Served Weapon) automatic

grenade launcher. The experimental OSW showed an increased effectiveness against various targets, but

the recoil was beyond human limitations. This weapon, also known as the Barrett "Payload Rifle", has

now been designated the XM109.

[edit] M82 to M107

The M107.
A U.S. Navy EOD Commander fires an M107 in Afghanistan.The XM107 was originally intended to be a bolt-

action sniper rifle, and it was selected by the U.S. Army in a competition between such weapons.

However, the decision was made that the U.S. Army did not, in fact, require such a weapon. The rifle

originally selected under the trials to be the XM107 was the Barrett M95.

Then the Army decided on the Barrett M82, a semi-automatic rifle. In summer 2002, the M82 finally

emerged from its Army trial phase and was approved for "full materiel release", meaning it was

officially adopted as the Long Range Sniper Rifle, Caliber .50, M107. The M107 uses a Leupold 4.5×14

Mark 4 scope.

The Barrett M107 is a .50 caliber, shoulder fired, semi-automatic sniper rifle. Like its predecessors

the rifle is said to have manageable recoil for a weapon of its size owing to the barrel assembly that

itself absorbs force, moving inward toward the receiver against large springs with every shot.

Additionally the weapon's weight and large muzzle brake also assist in recoil reduction. Various

changes were made to the original M82A1 to create the M107, with new features such as a lengthened

accessory rail, rear grip, and monopod socket. Barrett has recently been tasked with developing a

lightweight version of the M107 under the "Anti-Materiel Sniper Rifle Congressional Program", and has

already come up with a scheme to build important component parts such as the receiver frame and muzzle

brake out of lighter weight materials.

The Barrett M107, like previous members of the M82 line, are also referred to as the Barrett "Light

Fifty". The designation has in many instances supplanted earlier ones, with the M107 being voted one of

2005's Top 10 Military Inventions by the U.S. Army.[3]

[edit] Barrett M107CQ
A commercial development of the "new" M107, the M107CQ is specifically designed where the firepower of

a .50 caliber rifle is required, but the bulk of the M82/M107 series prevents the weapon from being

used. The M107CQ is 9" shorter in overall length (all in the barrel) and 5 pounds lighter than the

M107. According to the manufacturer the M107CQ is suitable for use in helicopters, force protection

watercraft, tactical scout land vehicles, and as an urban soldier's combat multiplier for close quarter


[edit] Technical description

A U.S. Army sniper using an M107.
Demonstration of an M82 during a training course at Hurlburt Field, Florida.
A USMC Scout Sniper with an M82A3.The M82 is a short recoil semi-automatic firearm. When the gun is

fired, the barrel initially recoils for a short distance (about 1 in/25 mm) being securely locked by the

rotating bolt. After the short travel, a post on the bolt engaged in the curved cam track in the

receiver turns the bolt to unlock it from the barrel. As soon as the bolt unlocks, the accelerator arm

strikes it back, transferring part of the recoil energy of the barrel to the bolt to achieve reliable

cycling. Then the barrel is stopped and the bolt continues back, to extract and eject a spent case. On

its return stroke, the bolt strips the fresh cartridge from the box magazine and feeds it into the

chamber and finally locks itself to the barrel. The striker also is cocked on the return stroke of the

bolt. The gun is fed from a large detachable box magazine holding up to 10 rounds, although a rare 12

round magazine was developed for use during Operation Desert Storm in 1991.

The receiver is made from two parts (upper and lower), stamped from sheet steel and connected by cross-

pins. The heavy barrel is fluted to improve heat dissipation and save weight, and fitted with a large

and effective reactive muzzle brake. On the earlier models the muzzle brakes had a round cross-section;

later M82 rifles are equipped with two-chamber brakes of rectangular cross-section.

M82A1 rifles are fitted with scope mount and folding backup iron sights, should the glass scope break.

The U.S. military M82 rifles are often equipped with Leupold Mark 4 telescopic sights. The M82A1M (USMC

M82A3) rifles have long Picatinny accessory rails mounted and US Optics telescopic sights. Every M82

rifle is equipped with a folding carrying handle and a folding bipod (both are detachable on the M82A3).

The M82A3 is also fitted with a detachable rear monopod under the butt. The buttpad is fitted with a

soft recoil pad to further decrease the felt recoil. M82A1 and M82A3 rifles could be mounted on the M3

or M122 infantry tripods (originally intended for machine guns) or on vehicles using the special Barrett

soft-mount. The M82A1 can be fitted with a carry sling but according to those who carried it in the

field, the M82 is too uncomfortable to be carried on a sling due to its excessive length and heavy

weight. It is usually carried in a special carry soft or hard case.

The M82A2 differed from M82A1 mostly in its configuration—that the pistol grip along with trigger had

been placed ahead of the magazine, and the buttpad has been placed below the receiver, just after the

magazine. An additional forward grip was added below the receiver, and the scope mount has been moved

forward too.

The maximum range of this weapon (specifically the M107 variant) is 7,450 yards (6,812m). The maximum

effective range of the M107 is 2,000 yards (1,829m). This is, in fact, the distance as quoted in the

owner's manual that should be allowed downrange for bullet travel. Fifty caliber (and larger) rounds

have the potential to travel great distances if fired in an artillery-like fashion, necessitating the

observance of large safety margins when firing on a range.

Rating: 5 of 5 Stars! [5 of 5 Stars!]

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