Caliber: 308 Winchester – Barrel: Diamondback Barrels 308 Winchester Rifle-Length* 18 in. Medium 416R Stainless Steel Black Nitride Fluted – Twist: 1:10 RH – Gas System: Rifle-Length* – BCG: Shot-Peened Magnetic Particle Inspected Mil-Spec 8620 Carrier Lasered Logo – Upper: A3 Flattop Forged 7075 T-6 Aluminum – Lower: Forged 7075 T-6 Aluminum [Diamondback Black Gold Lower] w/ Enhanced Skeletonized Trigger Guard – Handguard: Diamondback 15 in. M-LOK (V-Rail) w/ Anti-Slip Texture Pads – Grip: MOE K2 Grip – Stock/Brace: Magpul CTR Stock – Magazine: Gen M3 PMAG 20 Rd – Sights: None – Muzzle Device: Diamondback CNC DBSB-IV Flash Hider [5/8 x 24] – Trigger: Standard – Weight: 8.73 lb. – Length (Collapsed): 36 in. – Length (Extended): 39-1/4 in.