20 inch varmint rifle bt-3 with 20-inch stainless steel bull barrelcaliber:.308 / 7.62x51mm nato chamber.Lower receiver:rra bt-3 billet lower.Upper receiver:rra bt-3 billet a4 upper.Barrel:20-inch stainless steel bull, 1:10 twist, cryogenically treated.Gas block:low profile gas block, rifle length gas system.Trigger:rra two stage trigger.Buttstock:rra 6-position nsp-2 car stock.Pistol grip:hogue rubber grip.Handguard:rra lightweight free float rail, 17 inch extended, m-lok compatibleAction: Semi-AutoCaliber: 308 WinBarrel Length: 20"Capacity: 20+1Safety: Safety Selector SwitchOal: 37.25"-39.75"Weight: 9.80 lbsStock Description: RRA 6 Position NSP-2 CarbineReceiver Material: AluminumBarrel Description: 20" BullTwist: 1:10"Barrel Length Range: 20" to 20.99"Weight Range: 9 lbs to 9.99 lbsHand: Right HandStock Finish Group: Black