CALIBER: 5.56 NATOBARREL: DIAMONDBACK BARRELS 5.56, MID-LENGTH,16″, MEDIUM, 4150 CrMov, BLACK NITRIDETWIST: 1:8 RHGAS SYSTEM: MID-LENGTH GAS SYSTEM WITH PINNED GAS BLOCKBCG: SHOT-PEENED, MAGNETIC PARTICLE INSPECTED MIL SPEC 8620 CARRIER, LASERED LOGOUPPER: A3 FLATTOP FORGED 7075 T-6 ALUMINUM, T-MARKEDLOWER: FORGED 7075 T-6 ALUMINUM (DIAMONDBACK DIAMOND LOWER) W/ ENHANCED SKELETONIZED TRIGGER GUARDHANDGUARD: DIAMONDBACK 15″ M-LOK ANTI ROTATION (S RAIL)GRIP: MOE-K2+ GRIPSTOCK/BRACE: MAGPUL ACS-L STOCKMAG: GEN 2 PMAG 30RDSIGHTS:MUZZLE DEVICE: DIAMONDBACK CNC MUZZLE BRAKE (1/2 X 28)TRIGGER: CMC 3.5 LB SINGLE STAGE DROP IN TRIGGERWEIGHT : 6.95LENGTH (STOCK COLLAPSED): 34″LENGTH (STOCK EXPANDED): 37 1/4″