GLOCK MOS Plate, Size 05, Fits Docter/Meopta/Insight Footprint, For Glock MOS Gen 5 45ACP/10mm, Black 74012 The GLOCK MOS Adapter Plate 05 is designed to allow users to seamlessly mount red dot optics to the slide of their compatible Glock Gen 5 handgun. This plate is compatible with a range of MOS pistols" including the G20" G21" G22" G23" G35" G40.