This model of the standard rifle is chambered in 300 blk, and features a black anodized finish.It has an 16" barrel with an a2 flash hider muzzle device, and has a twist rate of 1:7".It features a m-lok handgaurd with a adaptive tactical efx stock.Action: Semi-AutoCaliber: 300 BlackoutBarrel Length: 16"Capacity: 30+1Safety: Manual ThumbOal: 33"Weight: 6.54 lbsStock Description: Adaptive Tactical EFXMuzzle: A2 Flash HiderReceiver Material: 7075-T6 AluminumSights: None, Optic ReadyTwist: 1:7"Barrel Length Range: 16" to 16.99"Weight Range: 6 lbs to 6.99 lbsHand: RightStock Finish Group: Black