DIAMONDBACK FIREARMS DB10 CARBON SERIES 308 WINCHESTER SEMI-AUTO RIFLE W/ADJUSTABLE GAS BLOCK The DB10 Carbon Series is Diamondback's entry level line. You get all the reliability and basic features that you need, and nothing that you don't. This line is outfitted with Magpul furniture, a DB Carbon lower, and an M-LOK compatible handguard. SPECS Finish: Black Hardcoat Anodize Caliber: .308 Winchester Barrel: 20 in, 1:10 RH, Medium, 4150 CrMoV, Black Nitride Gas System: Rifle-Length w/ Superlative Adjustable Gas Block, Direct Impingement BCG: Shot-Peened, Magnetic Particle Inspected Mil Spec 8620 Carrier Upper: Mfg: Diamondback