Red dot adapters for Glock models

This collection brings together every red dot adapter we have for Glock models: optics ready plates for Glock models with a factory optic cut, and red dot mounts for Glock models without one. Pick your model above and you see only the plates or mounts that fit it.

Plate or mount: which one does your Glock model take

• Optics Ready Glock models have a factory optic cut in the slide, closed with a cover plate. They take an optics ready plate. The plate goes into the cut and connects it to the footprint of your red dot.
• Glock models without an optic cut take a red dot mount. The mount replaces the rear sight in its dovetail. You need no slide milling and no permanent modifications.

A mount does not fit an Optics Ready model, and a plate does not fit a model without the cut. Choose your exact model, including the Optics Ready (OR) or MOS part of its name.

Optics Ready Glock models

We have optic plates, also called MOS adapter plates, for Glock pistols with the factory MOS optic cut. MOS stands for Modular Optic System. You also find direct-fit red dots that mount on the MOS cut without a plate. The plate goes into the MOS cut and connects it to the footprint of your red dot.

Three MOS cuts

Glock uses different MOS cuts on different slides. A plate fits only the cut it is made for:

• MOS on full-size and compact slides: models such as the Glock 17, 19, 26 and 34 MOS. Most plates in this page are for this cut. See Optics ready plates for Glock 17 MOS, Optics ready plates for Glock 19 MOS and Optics ready plates for other Glock MOS models.
• Gen 6 MOS: the Gen 6 series has its own MOS interface. Choose plates that name Gen 6 in the title. See Optics ready plates for Glock MOS gen.6 models [G19, G17 & other].
• Slimline MOS: the Glock 43X MOS and 48 MOS have a smaller cut. They take their own plate for the Holosun K-series footprint. See Optics ready plates for Glock 43X MOS & 48 MOS.

Footprints for the MOS cut (Gen 4 and Gen 5)

For the full-size and compact MOS cut, plates exist for almost every common pistol footprint:

• Single footprints: Trijicon RMR, Shield RMSc, Holosun K-series, Leupold DPP, Docter, C-More RTS, Aimpoint Acro, Holosun 509T and Holosun EPS.
• Toni System type A: Shield RMSc, Leupold DPP and Docter.
• Toni System type B: Trijicon RMR and C-More RTS.
• A steel plate for both Shield RMSc and Holosun K-series.

Footprints for the Gen 6 MOS

Aluminium plates for the Gen 6 MOS interface take five footprints. These are Trijicon RMR, Shield RMSc, Holosun K-series, Leupold DPP and Aimpoint Acro. The Holosun K-series plate for Gen 6 fits the ORS slide. It does not fit the Gen 6 SLIM slide variant. It takes the Holosun EPS, EPS Carry, SCS Carry, 407K and 507K.

Steel or aluminium plates

KMR in the Czech Republic and Eemann Tech make steel plates. 2BME in Poland and Toni System in Italy make aluminium plates. Steel plates are heavier. Both fit the MOS cut in the same way.

Direct-fit red dots for Glock MOS

Some red dots fit the Glock MOS cut without any plate:

• Holosun SCS MOS.
• Vector Optics Frenzy 1x16x21 for Glock MOS.
• Osight SE MOS, an enclosed red dot. It fits full-size MOS slides of Gen 4 and Gen 5. Examples are the G17, G19, G19X, G20, G21, G22, G23, G26, G34 and G47. It does not fit the Glock 43X and 48 MOS or Gen 6 MOS slides.

Installation

Remove the factory cover plate from the MOS cut. Screw the optic plate into its place, then screw the red dot onto the plate. No milling is needed and you can do it yourself. Threadlocker on the screws is recommended.

Glock models without an optic cut

We have red dot mounts for Glock pistols without the MOS optic cut. The mounts replace the rear sight in its dovetail. You need no slide milling and no permanent modifications. The mounts do not fit Glock MOS variants. For a MOS pistol, see Optics ready plates for Glock models.

Which mount fits which Glock

Not all Glock models share the same rear sight dovetail:

• G17, G19, G26 and most other standard models (Gen 3 and later): the largest choice of mounts. See Red dot mounts for Glock 17, Red dot mounts for Glock 19, Red dot mounts for Glock 26, Red dot mounts for Glock 34 and Red dot mounts for other Glock models.
• Glock 21 and Glock 22: each has its own Shield Sights mount for the Shield RMSc footprint. A mount for the G17 and G19 does not fit them. See Red dot mounts for Glock 21 and Red dot mounts for Glock 22.
• Glock 43: its own Shield Sights mount for the Shield RMSc footprint. See Red dot mounts for Glock 43.

Footprints for the standard Glock models

For the G17, G19, G26 and similar models, you can choose from:

• Single footprints: Trijicon RMR, Shield RMSc and Holosun K-series.
• Toni System type A: Shield RMSc, Leupold DPP and Docter.
• Toni System type B: Trijicon RMR and C-More RTS.
• Outer Impact type C: Trijicon RMR, C-More RTS and Docter.
• Type D: Trijicon RMR and Docter.
• EGW type S: Shield RMSc, Leupold DPP and Holosun K-series.

Shield Sights polymer mounts

The Shield Sights mounts for Glock are made of polymer with a brass wedge. To install them, you remove the rear sight block and fit the brass wedge that holds the polymer mount. Mounts for the G17 and G19, G21, G22 and G43 are available.

Frame mount for Glock Gen 4

A Toni System frame mount installs on the bottom of the frame, not on the slide. It fits some Glock Gen 4 models, including the G17, G22, G23, G31, G32, G34 and G35. It takes the Trijicon RMR footprint. The red dot stays still while the slide cycles.

Makers and materials

Toni System (Italy), Outer Impact, EGW, Angry Bear and Holosun (USA) make aluminium mounts. Zendl in the Czech Republic makes a steel mount. Shield Sights in the United Kingdom uses brass and polymer.

All red dot mounts at a glance

The table lists every product in this page. The middle column gives the footprints, so you can check at once which red dots it takes.

Mount	Footprints	Maker
Glock 17, Glock 19 red dot mount	Shield RMSc footprint	Shield Sights
Glock 21 red dot mount	Shield RMSc footprint	Shield Sights
Glock 22 red dot mount	Shield RMSc footprint	Shield Sights
Glock 43 red dot mount	Shield RMSc footprint	Shield Sights
Red dot frame mount for Glock gen 4 models [G17, G22, G34 & other]	Trijicon RMR footprint	Toni System
Red dot mount Glock models [G17, G19, G26 & other]	Holosun K-series footprint, Shield RMSc footprint	Angry Bear
Red dot mount Glock models [G17, G19, G26 & other]	Shield RMSc footprint	Zendl
Red dot mount Glock models [G17, G19, G26 & other]	Trijicon RMR footprint, type S [RMSc, DPP, K-series footprint]	EGW
Red dot mount Glock models [G17, G19, G26 & other]	type A [RMSc, DPP, Docter footprint], type B [RMR & RTS footprint]	Toni System
Red dot mount Glock models [G17, G19, G26 & other]	type C [RMR, RTS, Docter footprint], type S [RMSc, DPP, K-series footprint]	Outer Impact
Red dot mount Glock models [G17, G19, G26 & other]	type D [RMR & Docter footprint]	Holosun

Installation

Drift the rear sight out of the dovetail with a sight pusher or a punch. Push the mount into the same dovetail and fix it. Then screw the red dot onto the mount. No slide milling or permanent modifications are needed. See Installation tools.

Related collections

For iron sights, see Sights for Glock models. For the tools you need, see Installation tools. For other brands, see Red dot adapters.

DISCLAIMER: "GLOCK" is a federally registered trademark of GLOCK, Inc. and is one of many trademarks registered by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither BITZU, s.r.o. d.b.a. Optics Spot nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of any "GLOCK" trademarks on this page is merely to advertise the sale of pistols, parts, components or accessories that are compatible with GLOCK pistols. For genuine GLOCK, Inc. and GLOCK Ges.m.b.H. products and parts visit www.glock.com.

Frequently asked questions

Can I install an optic plate on my Glock MOS at home?

Yes. No milling is needed, and you can do it yourself.

1. Remove the cover plate from the MOS cut.
2. Screw the optic plate into the cut.
3. Screw the red dot onto the plate.

Put a drop of threadlocker on every screw.

Which red dots will fit my Glock MOS?

It depends on the plate you choose. Every plate takes one footprint or a group of footprints. For Glock MOS pistols we have plates for the Trijicon RMR, Shield RMSc, Holosun K-series, Leupold DPP, Docter, C-More RTS, Aimpoint Acro and Holosun 509T footprints.

Choose your red dot first and find its footprint in the specifications. Then take the plate with the same footprint.

Which plate fits my Glock 19 MOS?

Any plate for the full-size MOS cut with the footprint of your red dot. The G17, G19, G26, G34 and other MOS models share the same cut.

I have a Gen 6. Do the normal MOS plates fit?

No. The Gen 6 has its own MOS interface. Choose a plate with Gen 6 in its title.

Can I put a red dot on my Glock without an optic cut?

Yes. The mount goes into the rear sight dovetail in place of the rear sight. No milling and no permanent changes, so you can put the rear sight back at any time.

Can I install the mount at home?

Yes, if you have a sight pusher or a punch.

1. Drift the rear sight out of the dovetail.
2. Push the mount into the dovetail and tighten it.
3. Screw the red dot onto the mount with a drop of threadlocker on each screw.

You find the tools in Installation tools.

Does the G17 mount fit my G21?

No. The Glock 21 and 22 have their own mounts. Choose a mount with your model in the title.

My Glock 19 MOS is Optics Ready. Will these mounts fit?

No. A pistol with a factory optic cut takes an optic plate, not a mount. See Optics ready plates for Glock models.

Which generation does it fit?

Most rear sight mounts fit the G17, G19, G26 and similar models from Gen 3 on. The frame mount fits some Gen 4 models only.