Precision Reflex Gas Buster Charging Handle w/ Military Big Latch 9mm Black. Handle does not work on Rock River 308 or DPMS gen II 308's. Specifications for Precision Reflex Gas Buster Charging Handles: Manufacturer: Precision Reflex Finish: Hard Coat Anodized Fabric/Material: T6 7075 Aluminum Gun Make: AR Platform Hand: Right Condition: New Package Contents: Precision Reflex Gas Buster Charging Handles What firearm models does the manufacturer say Precision Reflex Gas Buster Charging Handles is compatible with? The manufacturer says that Precision Reflex Gas Buster Charging Handles is compatible with AR-15 M16Precision Reflex 05-009-BL: Gas Buster Charging Handle w/ Military Big Latch 9mm Black