Yankee Hill Machine Co 3 Slot Picatinny Angle Mount, Black, Picatinny, 1 3/16 YHM-9690A These mounts are great when used with scopes" flashlights" lasers etc. Accessories are mounted at a 45 degree angle. When used with scopes the iron sights remain visible. Made from aircraft quality aluminum and Hardcoat Anodized matte black to Military Specifications or better.