Description H&K G3 Top Rail Mount Detail FEATURES Machined from hardened aircraft aluminum Easy and tight attach on your G3 Provides a perfect sight mount solution MIL-STD 1913 Picatinny rail Finished in MIL-SPEC hard coat anodizing. No gunsmith required Compatibility:H&K: G3, G33. Rail total length: 5.10″. Weight: 200 g Color: Black