Made from mil-spec, hard-anodized aluminum, this Wilson Combat Flip-Up Rear Sight is a rugged, click adjustable option for your next AR rifle or pistol build. This high-quality folding rear sight easily clamps on any standard Picatinny rail and has a positive, upright steel locking mechanism for rigid, accurate durability under heavy use. The anti-snag rear sight is standard height, low profile, finger adjustable for windage and has a dual peep with a .200" and .075" aperture. FeaturesFolding sight with a low profile when not in useSteel upright locking mechanismStandard AR-15 height with low-profile windage adjustment