DIAMONDBACK FIREARMS DB10 CARBON SERIES 308 WINCHESTER SEMI-AUTO RIFLE 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 Caliber: .308 Winchester Barrel: 16 in, 1:10 RH, Light, 4150 CrMov, Black Nitride Gas System: Mid-Length, Direct Impingement BCG: Shot-Peened, Magnetic Particle Inspected Mil Spec 8620 Carrier Upper: A3 Flattop Forged 7075 T-6 Aluminum Lower: Forged 7075 T-6 Aluminum (DB10 Carbon Lower) Mfg: Diamondback