Precision Reflex Gen 3 Forearm Wrench Assembly Tool Black. Constructed of steel. Specifications for Precision Reflex Forearm Wrench Assembly Tool: Manufacturer: Precision Reflex Fabric/Material: Stainless Steel Color: Steel Gun Model: AR-15 Features of Precision Reflex GenIII Forearm Wrench Assembly Tool: This wrench is constructed of steel. Package Contents: Precision Reflex Forearm Wrench Assembly Tool What firearm models does the manufacturer say Precision Reflex Forearm Wrench Assembly Tool is compatible with? The manufacturer suggests that Precision Reflex Forearm Wrench Assembly Tool is compatible with AR-15Precision Reflex 05-0081: Gen 3 Forearm Wrench Assembly Tool Black