CALIBER: 5.56 NATO - BARREL: DIAMONDBACK BARRELS 5.56 PISTOL-LENGTH 10 MEDIUM 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: FORGED 7075 T-6 ALUMINUM (DIAMONDBACK DIAMOND LOWER) W/ ENHANCED SKELETONIZED TRIGGER GUARD - HANDGUARD: DIAMONDBACK 13 M-LOK ANTI ROTATION (S RAIL) - GRIP: MOE-K2+ GRIP - STOCK/BRACE: TAILHOOK MOD 2 - MAG: GEN 2 PMAG 30RD - SIGHTS: MBUS SIGHTS - MUZZLE DEVICE: KAK STANDARD SIZE FLASH CAN (1/2 X 28) - TRIGGER: STANDARD