CMMG Banshee Mk4 5.7x28mm 8" Upper Group

An 8" PDW-style upper in 5.7x28mm, which CMMG says is designed to provide superior ballistics and less felt recoil than most pistol-caliber personal defense weapons. It comes complete with a bolt carrier group and ZEROED accessories. It uses CMMG's Radial Delayed Blowback system, originally developed for the .45 ACP MkG. CMMG says this gives a softer recoil impulse and reduced bolt weight compared with traditional straight blowback. Lifetime Quality Guarantee.