The AS50 is a .50 BMG anti-materiel precision rifle manufactured by British firearms producer Accuracy International. The AS50 enables operators to engage targets at very long range with high accuracy using explosive or incendiary ammunition. The AS50 employs a gas operated semi-automatic action and muzzle brake, allowing for lower recoil than the AW50 bolt-action rifle and faster target acquisition. The rifle is highly transportable, ergonomic and lightweight. It can be disassembled in less than three minutes and serviced without tools.