TruGlo's Tru-Brite Xtreme Compact Tactical Scope comes with 1" rings for mounting to your accessory rail. Its fully coated lenses provide maximum brightness, clarity and contrast. The fingertip windage and elevation adjustment are under screw down caps and the durable leaf spring is for windage and elevation adjustments. This one piece tube made of aircraft quality aluminum with a durable, scratch resistant, non reflective matte finish.