GLOCK MOS Plate, Size 08, Fits Leupold Footprint, For Glock MOS Gen 5 45ACP/10mm, Black 74015 The GLOCK MOS Adapter Plate 08 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.