Complete Upper Build Kits

These kits come with the parts needed to build a working upper assembly. Lower Build Kits can be found here to build a lower assembly.

Parts included are an upper receiver, barrel, gas tube, gas block, handguard, muzzle device, BCG (Bolt Carrier Group), and Charging Handle. 

When choosing your kit, keep in mind, that you can have the parts shipped and assembled yourself, or have the parts assembled by one of our gun builders.