"The Diamondback DB10 Carbon Series AR-10 Semi-Auto Rifle is a rock-solid rifle with everything you need and nothing you don't. Built around a direct-impingement operating system and mid-length gas system that can cycle a wide variety of loads, the DB10 Carbon features a 16"" 4150 chrome-moly vanadium steel barrel, Magpul MOE K Grip, and Magpul MOE Carbine Stock. Inside, the shot-peened, MPI-inspected 8620 bolt carrier group provides reliable cycling. 15"" M-LOK handguard provides a rigid and versatile platform for modern accessories. A2 flash hider. Includes 1 Magpul Gen M3 PMAG. Direct impingement operation Mid-length gas system 16"" 4150 chrome-moly vanadium steel with 5/8""-24 threads A2 flash hider Forged 7075-T6 upper and lower receiver Shot-peened, MPI-inspected 8620 bolt carrier group 15"" M-LOK handguard Magpul MOE K Grip Magpul MOE Collapsible Stock"