UTG OT-RDM16R: Slide-mounted red dot sights are taking the law enforcement and competition worlds by storm, and for a good reason. The advantages of target-focused sighting, quicker sight tracking for faster follow-up shots, and increased accuracy all apply just as much to concealed carry as they do to duty or competition use. The OP3 represents the next generation of ultra-compact micro red dot sights and is optimized for everyday carry-on slimline pistol slides. There is no plastic body or polymer lens here, only hard coated 7075 aluminum and multi-coated glass.