NCStar’s Small Tube Reflex Optic has tactical-styling and an unlimited eye relief for flexible mounting. The red green and blue LEDs are 100% safe for the eyes and the rheostat knob has three brightness settings for each color. It is constructed with a black anodized aluminum body and a platinum lens coating. This optic features a 30mm cantilever mount compatible with Weaver/Picatinny-type rails and secured with a thumb nut. It has a centerline height of 1.5″ above the rail popular with AR15 platforms. It includes ocular and objective flip-up lens covers batteries and mounting tools.