DPMS AR-10 Upper Receiver Claw Block One Size. Made of a solid one piece high strength polymer the Claw is extremely durable. Simply clamp into a bench vise slide the upper onto the Claw secure with the two holding pins and begin installing your barrel and components. Specifications for DPMS AR-10 Upper Receiver Claw Block: Manufacturer: DPMS Gun Model: AR-10 Gun Make: AR Platform Fabric/Material: Polymer Package Contents: DPMS AR-10 Upper Receiver Claw Block What firearm models does the manufacturer say DPMS AR-10 Upper Receiver Claw Block is compatible with? The manufacturer says that DPMS AR-10 Upper Receiver Claw Block is compatible with AR-10DPMS DP51655131036: AR-10 Upper Receiver Claw Block One Size