Magpul PTS MBUS Back-Up Sight-Rear GEN 1/BK

- Airsoft Version of MBUS ( Magpul Back Up Sight )
- Front Sight Only
- Spring Loaded Flip-Up system, deployed by pressing release point which can be reached by both sides or on top.
- Sights lock into position with audible click sound, and fold without having to release any lock.
- Dual Apertures and Adjustable Windage.
- Same High-Strength Polymer Material As PMAG.
- Fits 20mm Rails.