The NcStar Mark III Tactical Series 39x42mm Rifle Scope is great for all types of tactical situations. It includes green and blue illumination with multiple brightness settings for each color. The riflescope is fog water and shock proof with fully multi coated lenses. It also features an improved Locking Quick Release mount and Scope Centerline height raised to AR15s 1.5 scope height. Scope has lowered BDC Turret height for lower mounting height for the optional 34mm Micro Dot mount and optic.