As the first semi automatic.50 caliber rifle available, the model 82a1 continues to blaze new territory.Its chamber is chrome plated and dimensioned for both civilian and military ammunition.The extractor and ejector are proven to work under any condition, and close tolerances on every part allow it to function in all environments.The muzzle brake, dual barrel springs and long mainspring design make this iconic rifle comfortable and exciting to shoot.It features a muzzle brake, dual barrel springs, and a m1913 optics rail.Included is a 10+1 round magazine, carry handle, bipod, monopod, and a hard carrying case.Metal Finish: FDE Cerakote/BlackAction: Semi-AutoCaliber: 50 BMGBarrel Length: 29"Capacity: 10+1Trigger: StandardSafety: LeverOal: 57"Weight: 32.72 lbsStock Description: Fixed w/Sorbothane Recoil PadMuzzle: Double Chamber Muzzle BrakeReceiver Material: SteelSights: Flip Up Iron RearBarrel Description: FlutedTwist: 1:15"Barrel Length Range: 29" to 29.99"Weight Range: 20 lbs and AboveHand: RightStock Finish Group: BrownMetal Finish Group: Brown/Tan