The Primary Arms SLx Microdot Mount offers a tall 2.26" optical centerline height perfect for use those who prefer a more heads-up shooting position. This tall red dot sight mount features a rugged yet light weight design constructed from 6061-T6 aluminum with steel hardware and recoil lugs to keep your optic zeroed. It is compatible with standard microdot footprints for compatibility with a wide range of red dot sights including SLx MD25. The SLx 2.26" red dot mount also allows the use of back-up iron sights due to the skeletonized design. If you are looking for a feature rich mount, then you can't go wrong with the Primary Arms SLx 2.26" red dot mount. EXPORT CONTROLLED ITEMS: These items are controlled for export and may require an export license from the U.S. Government. Buyer acknowledges that Buyer is responsible for obtaining all export licensing authorizations and filing all export documents prior to export from the United States.