The DRGB is a Tactical Red Dot Reflex Optic with a Cantilever mount. The Cantilever mount will mount onto nearly any WeaverPicatinny type rails. The scope features a Rheostat knob with three brightness levels for each of the Red Green and Blue Dot reticles black ocular and objective flipup lens covers for a nice contrasting look. Includes extra battery and mounting tools.