Finish: Black Hardcoat Anodize - Caliber: 5.56 NATO - Barrel: Diamondback Barrels 16 in 1:8 RH Medium 4150 CrMov Black Nitride - Gas System: Mid-Length - BCG: Shot-Peened Magnetic Particle Inspected Mil-Spec 8620 Carrier - Upper: A3 Flattop Forged 7075 T-6 Aluminum T-Marked - Lower: Forged 7075 T-6 Aluminum (DB15 Carbon Lower) w/ MagPul Enhanced Trigger Guard - Handguard: 15 in M-Lok Anti-Rotation V4 S-Rail w/ Full Picatinny and QD Mounts - Charging Handle: Breek Arms Warhammer Mod2 Ambidextrous Charging Handle - Bolt Catch: Battle Arms Development Enhanced Bolt Catch - Safety: Battle Arms Development Ambidextrous Safety Selector - Grip: MagPul MOE K2 Grip - Stock: MagPul CTR Stock - Magazine: MagPul Gen M3 PMAG 30RD - Magazine Catch: Battle Arms Development Ambidextrous Magazine Catch/Release - Sights: None - Muzzle Device: DB Obsidian Muzzle Brake (1/2 x 28) - Trigger: Standard Mil-Spec - Weight: 6.60 lbs - Length (Length Collapsed / Length Extended): 33 in / 36.25 in