Built from corrosion-resistant steel with adjustable windage and dual viewing apertures, the Magpul® MBUS Pro Flip-Up Rear Sight is a performance-enhanced rear iron sight, engineered to deliver unparalleled reliability and quick target acquisition in any tactical environment. Featuring rugged all-steel construction with a case-hardened melonite finish and spring-loaded flip-up mechanism, this drop-in rear sight system folds down for low-profile storage and quickly pops up to a standard AR height for lightning-fast deployment and easy co-witnessing with riflescopes and red dot sights. The simple windage adjustments offer quick zeroing, while multiple apertures offer improved flexibility for engaging short- and long-range targets. Compatible with most IR aiming laser and light installations for professional users. Adjustable for windage ONLY. Order today! Made in USA.