The ArmaLite AR-50 is a .50 BMG, single-shot, bolt-action anti-materiel rifle manufactured by ArmaLite.The AR-50 rifle utilizes its weight and a large, fluted muzzle brake to reduce recoil.

The receiver is bedded to the V-shaped stock, while the barrel is free-floated above the forend.

ArmaLite updated the rifle to the AR50-A1B model, which featured a smoother action and a more heavily reinforced muzzle brake.

The AR50-A1B was designed for long-range shooting, primarily firing the .50 BMG round.

[3] The corporate parent of Armalite, Strategic Armory Corps, issued a statement apologizing for the advertisement, which it said was in "poor taste" and had been dropped.