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 MIL-STD-1913 Picatinny/STANAG 4694 rail and provides the same height-over-bore as standard A2 irons.
- Protective wings shield the spring-locking A2 front sight post.
- Elevation adjustment tool included, but most aftermarket A2 front sight adjustment tools may be used as well.