What red dots fit the GLOCK 44 MOS (.22 LR)?
Page last updated . Data compiled September 2026 by Andrew Terrebonne.
71 of the 77 optics tracked here mount to this slide, and 1 of those needs no adapter plate. This slide uses GLOCK MOS — standard & full size.
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 44 MOS (.22 LR)
| Plate | Gives you | Source | Price |
|---|---|---|---|
| MOS Plate 01Docter, Meopta, Insight, Vortex Venom / Viper, Burris FastFire | Docter / Noblex | GLOCK factory ↗ | $13–25 |
| MOS Plate 02Trijicon RMR / SRO, Ameriglo, Holosun C-series. Standard MOS pistols ship with this plate. Plates 01, 03 and 04 are factory parts sold separately. | Trijicon RMR | GLOCK factory ↗ | in the box |
| MOS Plate 03C-More RTS2 / STS2 | C-More RTS2 / STS2 | GLOCK factory ↗ | $13–25 |
| MOS Plate 04Leupold DeltaPoint Pro and DPP-pattern optics such as the EOTech EFLX | Leupold DeltaPoint Pro | GLOCK factory ↗ | $13–25 |
| ROMEO2 GLOCK MOS adapter plate (SOR2M102)SIG's own plate for the ROMEO2 on standard MOS slides, sold separately. SIG no longer lists it on its site; retailers still stock it. | SIG Romeo2 | SIG Sauer | $25–60 |
| V4 MIL/LEO → Trijicon RMR / SRO / Holosun 407C / 507C / 508TSits lower than the factory plate and is the usual upgrade when a factory plate keeps loosening. Optic screws go into steel T-nuts in the plate; screws for each optic come with it. | Trijicon RMR | C&H Precision ↗ | $25–60 |
| V4 MIL/LEO (one SKU per footprint)The same plate for other footprints: order the version made for your optic. | Leupold DeltaPoint Pro Aimpoint ACRO Holosun K Shield RMSc Holosun 509T Trijicon RMRcc SIG Romeo1Pro Trijicon RCR | C&H Precision | $25–60 |
| Type A / Type BType A covers RMSc / DPP / Docter; Type B covers RMR / RTS2. | Shield RMSc Docter / Noblex Leupold DeltaPoint Pro Trijicon RMR C-More RTS2 / STS2 | Optics Spot | $25–60 |
| MOS → RCR (steel) | Trijicon RCR | Athena Precision ↗ | $60–95 |
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.