The Glock Modular Optic System (MOS) is Glock’s optics-ready platform. Instead of cutting the slide for one specific footprint, MOS slides ship with a set of adapter plates that let you mount several different red-dot footprints.
Also called Modular Optic SystemMOS
The Glock MOS standard at a glance
- Type
- Pistol optic system
- Key spec
- Numbered adapter-plate system
Good to know
Newer optics-ready Glock models may revise the plate system, so check that your plate matches both your slide’s MOS generation and your optic’s footprint before ordering.
Compatibility
Glock’s optics-ready system uses a set of numbered adapter plates to fit different red-dot footprints, rather than a single direct cut. Confirm which MOS plate set your pistol’s generation uses.
Adapter plates for Glock MOS
These plates mount on a Glock MOS pistol and provide a red-dot footprint:
| Slide cut / system | Adapter | Fits | |
|---|---|---|---|
| Glock MOS | Glock MOS Plate — DeltaPoint Pro footprint | Glock MOS models (Gen4 / Gen5) | |
| Glock MOS | Glock MOS Plate — Docter / Venom footprint | Glock MOS models (Gen4 / Gen5) | |
| Glock MOS | Glock MOS Plate — RMR footprint | Glock MOS models (Gen4 / Gen5) | |
| Glock MOS | Glock MOS Plate — RMSc footprint | Glock MOS models (Gen4 / Gen5) |