The MkGs in our receiver set designed to take small frame double stack Glock-pattern 9mm or .40 S&W magazines. Inspired by the popularity of the MkG, the MkGs utilizes Radial Delayed Blowback™ to create a pistol caliber AR that delivers lest felt recoil and reduced bolt weight compared to traditional straight blowback ARs.
Virtual Patent Information can be found here.