Barrel: 20" Faxon Match Grade Barrel 5R Rifling 4150CRMOV with Nickel Boron Barrel Extension. Chambered in .308, with a 1:10 twist, and a rifle-length gas system. Barrel is finished off with a 15" Sabre Lock-Up Rail, and a Sabre Compensator muzzle device. Upper: Forged 7075-T6 A3 AR upper is cerakoted in FDE. Bolt Carrier Group: Sabre AR-10 BCG with Sprinco Gas Rings and OCK's Gas Key Fasteners Lower: Sabre-10 lower with B5 CPS stock and B5 Grip. FDE cerakote finish. Marked multi-caliber. Comes Standard with Sabre S5 Buffer Tube,Law Tactical Folder, H Buffer, and Sabre Claw Two Stage Trigger