When you need to make that first shot count, you need the accuracy-enhancing power of the RAP4 Tactical Flip-Up Rear Sight! This lightweight, low-profile sight mounts to any RIS rail. The eyepiece, supported by a sturdy boom, folds down and out of the way when you need to push through heavy brush. Sight adjustments are easy, and the all-metal construction is designed for extended service life under harsh conditions. Flip it up when you need it, line up your front sight, and watch your paint arc right in on target!