CALIBER: 5.56 NATOBARREL: DIAMONDBACK BARRELS 5.56, MID-LENGTH,16″, MEDIUM, 4150 CrMov, BLACK NITRIDE W/ FDE CerekoteTWIST: 1:8 RHGAS SYSTEM: CARBINE-LENGTHBCG: SHOT-PEENED, MAGNETIC PARTICLE INSPECTED MIL SPEC 8620 CARRIERUPPER: A3 FLATTOP FORGED 7075 T-6 ALUMINUM, T-MARKEDLOWER: FORGED 7075 T-6 ALUMINUM (DIAMONDBACK DIAMOND LOWER) HANDGUARD: DIAMONDBACK 15″ M-LOK ANTI ROTATION (S RAIL)GRIP: MAGPUL MOE GRIP FDESTOCK/BRACE: MAGPUL MOE CARBINE STOCK FDEMAG: MAGPUL GEN M3 PMAG 30RD MCTSIGHTS: NONEMUZZLE DEVICE: A2 .556 CAL FLASH HIDER (1/2 X 28)TRIGGER: STANDARD MIL-SPECWEIGHT : 6.6 LBSLENGTH (STOCK COLLAPSED): 32.5″LENGTH (STOCK EXPANDED): 35.75″