The Hera Arms CQR Stock is designed for Enthusiasts. Made of glass fiber reinforced polymer, the CQR provides probably, in combination with the CQR Fore-Grip, the most compact and ergonomic stock system for the AR15 and AR10 platform. The CQR stock is designed to be used with AR15/M4 systems featuring a standard M4 buffertube as well as a mil-spec receiver. The CCS can also be used on systems using a M4 -tube compatible to the AR15/M4 system.