Precision CNC machined from lightweight, solid aluminum with type III black hard anodized finish. MIL-STD 1913 Picatinny rail pattern allows mounting a variety of lasers, sights and scopes or other accessories. Machined to fit Key-Mod mounting systems. Includes needed hardware for install. Specifications:- converts: keymod to Picatinny- length: 3.80 inch - slots: 9- material: aluminum- color: black.