99730 The Spike's Tactical ST-15 LE upper line-up is designed as a fully Mil-spec compliant upper series for law enforcement. This same level of quality and performance is now available to everyone, all at a price range that is affordable to shooters of any budget. Each component is manufactured to Mil-spec standards. This model features Spike's Tactical 16" with 1:7 Twist Mil-spec Barrel, M4 Barrel Profile, Carbine Length Gas System, F-marked A2 Front Sight Base, .750" Diameter Gas Seat, Spike's Tactical Mil-Spec M16 Bolt Carrier Group, M4 Double Heat Shield Handguards, and A2 Flash Hider. Photos show the exact item where applicable. Have questions? Reach out to Bay State Surplus and we'll get you squared away.