The ACI-15 300 BLACKOUT CQB 8 is engineered for shooters who demand maneuverability and reliable firepower in their AR-15 platform. Features M4 feed ramps; QPQ corrosion resistant finish; pistol-length gas system with .750 low profile gas block; M16 bolt carrier group; 7" MLOK handguard; 7075 T6 mil-spec upper with T-markings; charging handle; forward assist & ejection port assembly; Mil-Spec lower parts kit and SB Tactical SBA3 Adjustable Stabilizing Pistol Brace. Includes 30rd magazine.