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The Armalite M-15 A2 National Match Rifle is a semi-automatic rifle chambered in .223 Rem. or 5.56 NATO. It has a .223 WYLDE chamber. The M-15 A2 National Match Rifle is a variant of one of four rifles manufactured and sold by Armalite. Armalite recommends the gun for military shooting.

The M-15 A2 National Match Rifle features a National Match rear sight that does not exist on the M-15 A2 Service Model Rifle. The rear sight is adjustable .25 inches for windage and .5 inches for elevation. The gun also features a steel, chrome-lined barrel threaded for a flash suppressor, which reduces the visible signature of the burning gases that exit the muzzle. The M-15 A2 National Match Rifle has a two-stage trigger and aluminum-made upper and lower receiver. The first stage of the trigger pull checks in at 3.5 lbs, the second stage is approximately 4.5 to 5 lbs.

The M-15 A2 National Match Rifle has a synthetic stock finished in black or green, and weighs 9.1875 lbs. The gun is equipped with forged carry handle and A2 front sight. It has a rifling twist of 1 in 8 inches and is set at 1 MOA.

Armalite is an influential firearms manufacturer whose small arm designs have evolved into weapons currently in use today, like the M16 and M4, by militaries around the world. The company is currently based out of Geneseo, Illinois.