Truglo tru-tec micro red dot sight kit includes the tru-tec #tg8100b red dot sight and shotgun mount.Features common lug and bolt pattern for maximum compatibility (vortex, eotech, docter,insight, meopta, without shotgun mount.Whether riding the slide of an optic ready handgun or outfitting a rifle or shotgun with ultra lightweight accessories, the tru-tec micro is here to help.It incorporates features such as a 3-moa reddot reticle for fast acquisition, 23mm x 17mm multicoated objective lens, digital push button brightness control and an idle auto off system to save battery life.The red dot scope is cnc-machined from ultra lightweight aircraft grade aluminum and is water, fog and shock resistant.This model fits universal- rib mount for remington shotguns.Battery: CR2032Magnification: 1xObjective: 23mm x 17mmField Of View: UnlimitedEye Relief: UnlimitedDot Size: 3 MOALength: 1.81"Weight: 1.10 ozReticle: 3 MOA Red DotAdjustment Size: 1.0 MOAProofs: Water/Shock Resistant/Fog ProofOptic Coating: Multi-CoatedWindage Elevation: Adjustable