Missouri-based gun maker CMMG has come up with one of the most interesting and innovative firearms of the past couple years — the Mk47 Mutant. The carbine is part AR-15, part AK-47 and pure fury. The gun has some intriguing tweaks to it, making the 7.62x39mm function off a modified AR platform. The above video by Mr. GunsnGear does a pretty slick job showcasing many of these modifications. In particular, pay attention to the massive carrier group. It is basically a modified AR-10 group, which does require a proprietary buffer to function properly on the platform. The other aspect worth noting is the Mutant’s accuracy, a perk of shooting the intermediate round out of what is essentially a free-floating barrel.