Even though the majority of AR builds in this country are chambered around 5.56 (or perhaps .223 or .223 Wylde) there is a growing portion of shooters that are enamored with alternative cartridges. One of these is .300 Blackout, which offers some serious advantages over the former two.

This post will look at some of the reasons that a .300 Blackout built kit might offer you more value than a completed rifle, as well as where the cartridge wins out over 5.56.