Zengi 45 Degree 4 Slots Offset Side Flashlight Laser Picatinny Weaver Rail Mount 45 Degree Offset Rail on Picatinny/weaver Rail 4 slots Made from High Quality 6061 Aircraft Grade Aluminum Alloy 2 Hex Nuts and Locking Plate for Stable Quick Installation, Allen Wrench Included Fits AR15/ M16 /FALs Flat Tops