Barrel: 16″ .308 Win M4 Feed Ramp 4150 CMV, 1 in 10” twist, mid length gas system with .750 gas block diameter. Barrel is finished off with 15" thin profile monolitic MLOK free float handguard*, A2 "birdcage" style flash hider and a crush washer. Upper: Billet DPMS style upper is flat top, precision machined and hard coat anodized per MIL-8625 Type 3 Class 2. These upper receivers are precision machined from a solid block of aluminum, a true billet upper for added strength and rigidity. These uppers include integral shell deflector, forward assist housing, M-4 style feed ramps, and have flat top 1913 picatinny rail. Complete with forward assist and dust cover assemblies. Bolt Carrier Group: .308/7.62x51 complete bolt carrier assembly, chrome lined, nitride finish. MPI Tested. Comes complete with cam pin, firing pin and firing pin retainer. Lower Build Kit: DPMS style .308 lower parts kit, compatible with small hole pins. Stock: 308 LE style 6-position carbine stock kit in black. Designed specifically for DPMS style 308 rifles. Includes buffer tube, castle nut, end plate, .308 buffer and carbine spring.