Meprolight’s microRDS delivers the ultimate aiming solution for virtually any handgun! The microRDS utilizes a unique mounting system, which utilizes the rear sight dovetail to mount the microRDS adapter. This adapter serves both as a picatinny rail and as a backup iron sight, featuring the Meprolight Tru-Dot self-illuminated sight. The microRDS itself attaches a via quick-detach mount, and can be detached/re-attached without the need to re-zero the optic. In addition to being an outstanding pistol-optic, the microRDS is highly suited for on shotguns, or as a backup sight to a magnified optic on rifles. Features of the Meprolight microRDS: Mount adapter serves as both an attachment point and as back up iron sightsAttaches via quick detach mountCompatible with pistols, rifles and shotguns Meprolight microRDS S& W M& P Red Dot Sight Full Kit w/Backup Night Sight Set & QD Adapter 88070504