Barrel: 16" 4150V Nitride. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a mid-length gas system. Barrel is finished off with a PSA 13" Two-Piece Quad Rail, and a JMAC GFHC-E Pin and weld. Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS. These uppers are T-Marked engraved and come with a Carry Handle. Bolt Carrier Group: Father's of Freedom BCG by Microbest with Sprinco Extractor Spring and Carpenter 158 MP Bolt. Lower: Complete Sabre-15 lower with Black Sabre Grip and ODG Cerakote A1 stock. Cerakote ODG finish. Comes Standard with Springco Buffer Spring, Battle Arms Development Pivot/Takedown Pins, Sabre 2-Stage DLC Trigger, JP Reduced Power Springs, and Anti-Walk Pins.