The Spike’s Tactical ST-15 Enhanced upper line-up is designed as a fully Mil-spec compliant upper series. This 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 and backed by the Spike’s Tactical Lifetime Warranty. NOTE: Some states and areas, like California, New York, New Jersey, Connecticut, Massachusetts require certain options and modifications. Please check with your local FFL if you have questions regarding legality as we cannot be responsible for laws in every state or county

FN 16″, 1:7 Twist,Cold Hammer Forged, Mil-spec Barrel
ST Optimum Profile, Mid Length Gas System
F-marked A2 Front Sight Base, .750″ Diameter Gas Seat
Spike’s Tactical Mil-spec M16 Bolt Carrier Group
Mid Length Handguards
A2 Flash Hider
Weight of 4.07lbs

Spike’s Tactical Lifetime Warranty