The Aimpoint ACRO revolutionized the red-dot, reflex-sight market by providing a self-contained unit that solved many of the issues surrounding slide-mounted reflex optics that are becoming more popular with today's handguns. However, that's not all the ACRO is good for! With the Reptilia DOT Mount, this optic can also be tossed onto your AR-15 and will sit in the traditional lower 1/3 co-witness mount that's compatible with your folding backup iron sights. Each Reptilia DOT Mount is machined from 7075-T6 aluminum and features a hard-coat anodized finish. The mount itself features a spring-loaded clamp that attaches it to any standard Picatinny optics rail, and the clamp and its mounting bolt are flush with the mount body, so it won't snag on anything in your environment. Each mount is made in the USA and carries a full lifetime warranty.