CALIBER: 5.56 NATO – BARREL: DIAMONDBACK BARRELS 5.56 PISTOL-LENGTH 7 HEAVY 4150 CrMov BLACK NITRIDE – TWIST: 1:8 RH – GAS SYSTEM: PISTOL-LENGTH GAS SYSTEM – BCG: SHOT-PEENED MAGNETIC PARTICLE INSPECTED MIL SPEC 8620 CARRIER – UPPER: A3 FLATTOP FORGED 7075 T-6 ALUMINUM – LOWER: DIAMONDBACK STANDARD FORGED 7075 T-6 ALUMINUM LOWER – HANDGUARD: 6 M-LOK RAIL – GRIP: MOE GRIP – STOCK/BRACE: BUFFER TUBE FOAM PAD – MAG: GEN 2 PMAG 30RD – SIGHTS: NO SIGHTS – MUZZLE DEVICE: A2 FLASH HIDER (1/2 X 28) – TRIGGER: STANDARD TRIGGER – WEIGHT : 5.1 LBS – LENGTH : 23”