Magpul, MBUS Flip-Up Backup Sights, Black, Rear Sight

Impact resistant polymer construction provides light weight and resists operational abuse Spring-loaded flip up sight easily activated from either side or by pressing the top Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc. Clamps to most any Picatinny rail and provides the same height as standard iron sights Protective wings shield the spring-locking sight post; Elevation adjustment tool included, but most aftermarket sight adjustment tools may be used as well