The Barska Flip-Up Tactical Rear Sight is a quick-detachable, low profile rear sight that will keep you on target. This gun sight serves to improve overall shooting accuracy through precise windage and elevation adjustments. Attaching to a Picatinny or Weaver rail, this weapon accessory will easily attach to various types of firearms. It has made the rear sight from a lightweight and durable aluminum for maximum portability. Improve your accuracy with your firearm using Flip-Up Picatinny / Weaver Rear Sight.