Gaining in popularity since 2015, the 300 Blackout is an effective middle ground between the traditional .223/5.56 and the .308. If you want to jump on the bandwagon, this 300 Blackout Upper Assembly has your name on it. It features a 16″ Parkerized Barrel with a 15″ Keymod rail. This assembly comes complete with the BCG, charging handle, A2 flash hider so all you’ll need to do is take your existing upper assembly off and pop this one on. Or, if you are just starting a build, combine this upper assembly with your 80% lower, lower parts kit, and stock assembly, and you’ll be slinging lead downrange in no time.