CMMG Banshee MK4 5.7x28mm 8in Black Armor Cerakote Modern Sporting Pistol - 32+1 Rounds - One of the hottest contenders in the personal defense caliber market, 5.7x28mm has won favor with shooters all over the world, and for good reason. This cartridge was designed to provide rifle caliber-like ballistics with less recoil than most pistol caliber carbines. If you like the modularity potential of the AR15 platform youre in luck, this BANSHEE is built on our Mk4 AR15 platform which uses a standard AR15 lower receiver and our new and improved 5.7x28mm AR conversion mags, which means no need for a propriety lower. From the quick deploying RIPBRACE to the stylized receivers and EML handguards, every BANSHEE is tailor-made to be the personal defense weapon you can always depend on. With full-length M-LOK slots on both sides and the bottom of the handguard as well as M-LOK between the top Picatinny rail sections, you'll always have enough space for those must-have accessories. Includes CMMG 32rd magazine.