What red dots fit the GLOCK 20 Gen5 MOS (10 mm)?
Page last updated . Data compiled September 2026 by Andrew Terrebonne.
52 of the 77 optics tracked here mount to this slide, and 1 of those needs no adapter plate. This slide uses GLOCK MOS — 10 mm / .45 frames.
No plate neededPlate neededDoesn’t fit
No plate to buy counts the direct mounts plus the pairings whose plate normally comes in the pistol's or the optic's box. Box contents change between production runs, so check yours before counting on it.
New to red dots? What footprint, plate, co-witness and the rest mean
Cheapest ways to mount it
Every optic, and how it mounts
Adapter plates for the GLOCK 20 Gen5 MOS (10 mm)
| Plate | Gives you | Source | Price |
|---|---|---|---|
| MOS Plate 05Docter, Meopta, Insight, Vortex, Burris | Docter / Noblex | GLOCK factory ↗ | $13–25 |
| MOS Plate 06Trijicon RMR / SRO, Ameriglo Haven, Holosun C-series. The large-frame equivalent of plate 02, so it ships with the pistol; 05, 07 and 08 are bought separately. | Trijicon RMR | GLOCK factory ↗ | in the box |
| MOS Plate 07C-More RTS2 / STS2 | C-More RTS2 / STS2 | GLOCK factory ↗ | $13–25 |
| MOS Plate 08Leupold DeltaPoint Pro and DPP-pattern optics such as the EOTech EFLX | Leupold DeltaPoint Pro | GLOCK factory ↗ | $13–25 |
| V4 MIL/LEO (large frame)Per-footprint SKUs for the 27.5 mm slides. | Trijicon RMR Leupold DeltaPoint Pro Aimpoint ACRO Holosun K Holosun 509T Trijicon RCR | C&H Precision | $25–60 |
Check a specific pairing
Open the fit checker with this pistol selected, or click any "how it mounts" cell above for that pairing's verdict and build sheet.
Deciding between a few? Compare 3 popular optics on this slide side by side: window, weight, emitter, cost to mount and co-witness.