Quarter Circle 10 Pistol Rear Charging Upper Receiver

The Pistol-MUR is a rigid Mil-Spec flat-top upper custom made to fit Quarter Circle 10 carbines. The Pistol-MUR was developed to give the customer a Mil-Spec correct upper receiver with a thicker wall, making the MUR upper receiver a stronger platform. This more rigid upper receiver will increase accuracy and reliability, while extending the life of the interfacing components.