SNIPER Weaver Style 45-Degree Offset Rail Mount 4 Picatinny Slots Hard Anodized Black Matte Finish 45 Degree Offset Single Rail Mount - Fits Picatinny, Adds 4 Picatinny Slots Ergonomic design gives easy access to on/off switches CNC machined, premium quality aluminum alloy Hard-coat anodized, matte black Buy 2 to turn standard iron sights into canted / 45 degree iron sights