DealFeatures: Material: 17-4ph Heat Treated Stainless Steel. Finish: Bead Blasted Stainless Steel. Surface Hardness: 68RC. Caliber: 5.56mm/.223 Remington/.224 Valkyrie only. Thread: 1/2"-28 RH. Weight: 2.1oz. Includes crush washer. Anti-seize grease recommended for installation. from Ground Zero Precision (Product BF-GAMMA556S) |