The ACI-15 300 BLACKOUT HALO 10 MPS is engineered for shooters who demand a perfect balance of power, maneuverability, and advanced tactical features in their AR-15 platform. Features M16 BCG; M4 feed ramps; QPQ corrosion resistant finish; pistol-length gas system with .750 low profile gas block; M16 bolt carrier group; 9" MLOK handguard; 7075 T6 mil-spec upper with T-markings; charging handle; forward assist & ejection port assembly; Mil-Spec lower parts kit. Includes 30rd magazine.