This folding adjustable sight set is designed to mount on your rifle top rail and is designed with the durability and usability that you have come to expect from Magpul Industries. It is a spring loaded flip-up system with a release lever that can be reached on left, right, and top position. The sight fits all Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16/M4 platform. Rear sight comes with Dual apertures and adjustable windage. Made in the USA. Color: Black or Flat Dark Earth.