Ar-15 M4 Build Kit M-Lok 5.56mm - Ar15 16'''' M4 Build Kit M-Lok Black

Have you ever wanted to build out an AR-15 but have been unsure of what all components you need, or concerned that the parts might not all fit and work in conjunction with each other? Maybe you just want the convenience of purchasing one kit with nearly all the quantity AR-15 parts you'll need to build out a complete AR-15. If so, then the Brownells M4 Build Kit is just what you need. This kit contains everything you need, with exception of the lower receiver and sights, to build a quantity AR-15. Each Brownells M4 Build Kit has a 16" nitride barrel chambered in 5.56 NATO and a 1/7 rate of twist. The barrel profile is M4 and has M4 feed ramps. For a gas system we Mfg: Brownells