CALIBER: 556 NATO - BARREL: DIAMONDBACK BARRELS 5.56 CARBINE-LENGTH16 MEDIUM 4150 CrMov BLACK NITRIDE - TWIST: 1:8 RH - GAS SYSTEM: CARBINE-LENGTH GAS SYSTEM - BCG: SHOT-PEENED MAGNETIC PARTICLE INSPECTED MIL SPEC 8620 CARRIER - UPPER: A3 FLATTOP FORGED 7075 T-6 ALUMINUM T-MARKED - LOWER: DIAMONDBACK STANDARD FORGED 7075 T-6 ALUMINUM LOWER - HANDGUARD: 15 M-LOK RAIL - COATING: HARDCOAT ANODIZE - GRIP: MOE GRIP - STOCK: MOE CARBINE STOCK - MAG: GEN 2 PMAG 30RD - SIGHTS: NO SIGHTS - MUZZLE DEVICE: A2 FLASH HIDER (1/2 X28) - TRIGGER: STANDARD TRIGGER - WEIGHT: 6.6 LBS - LENGTH: (STOCK COLLAPSED 32 1/2) (STOCK EXPANDED 35 3/4)