Barrel: 18" 416R. Chambered in 6.5 Creedmoor, with a 1:8 twist, and a Mid-length gas system. Barrel is finished off with a PSA 15" Knurled Slant Rail, and a Sabre Compensator muzzle device. Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Bolt Carrier Group: Sabre AR-10 BCG with Sprinco Gas Rings, Sprinco Ejector Spring, Sprinco Extractor Spring, and OCK's Gas Key Fasteners Lower: Sabre-10 lower with black Magpul SL-S stock and grip. Black cerakote finish. Marked multi-caliber. Comes Standard with Springco Buffer Spring, Battle Arms Development Pivot