This rifle is the newest incarnation of the wildly popular AR-50 chambered for the powerful 50 BMG cartridge. A single shot bolt action rifle featuring a unique octagonal receiver bedded down into a V-shaped stock. Designed to be an economical answer for the challenges of long range shooting the AR-50A1 is amazingly accurate and with its massive fluted muzzle brake it has a very gentle recoil. The AR-50A1 is a highly refined rifle which is a stark and refreshing difference that maintains its superiority over its competition. – Armalite’s great .50 has been refined with smoother action attractive new bolt stop and even greater strength than the original AR-50. The same great accuracy but now even more beautiful. – Caliber: .50 BMG – Barrel: 30 Chrome moly – Rifling Twist: 1:15 RH – Muzzle Device: Highly efficient multi-flute recoil check – Front Sight Base: Modified octagonal form grilled and slotted for MIL-STD 1913 scope rail with boss to engage Cross-Slot on receiver – Stock: 3-section stock-extruded forend machined grip with vertical grip forward and machined removable – Bolt: Triple front locking lug – Ejector: Spring loaded plunger automatic ejection – Extractor: Sako type – Trigger: Shilen standard single-stage approximately 5 lbs. pull – Finish: Hard anodized aluminum manganese phosphated steel – Overall Length: 58.5 / 49.8 (Without Buttstock) – Weight: 34.1 lbs. – Included: 15 minute sight base ear plugs owner’s manual – Warranty: Limited lifetime warranty