Trijicon RMR footprint standard

February 15, 2025

Which red dots will be working with the Trijicon mount? Will you be able to install Holosun 507C on the same plate as Trijicon RMR red dot sight? We cover the full compatibility of the footprint in this article.

Footprint compatibility explained

What does a “footprint” mean? The term footprint refers to a sctructure of the sockets and screw holes on the base of the optic device.

And what does it mean if the footprints are compatible? Each optic sight has some base for mounting. The base consists of pins on various positions and holes for screws used for fixation of the sight to the mount.

If any two sights use the same base for mounting, we call that that they share the same footprint. In this article we show which red dots share the same footprint.

Trijicon RMR footprint pattern

RMR footprint consists of two sockets in the front and two screw holes in the middle of the sight.

The front socketes are 22,5mm / 0.89 inches far from each other, each positioned in the corner of the front of the sight. Position of these two sockets corresponds to position of pins that are on a mounting surface of any mount for this standard.

The screw holes are positioned cca in the middle of the optic device. These function for fixation of the sight to the mount. These two screw holes are 18,8mm / 0.74 inches far from each other.

The screws that are to be used for these screw holes are always included in the package with the sight.

Compatible red dots

RMR is one of the most common footprints on the market.

Below you can find complete list of sights that will work with Trijicon footprint.

Trijicon RMR standard

ADE Advanced Optics RD3-019 Stingray,
ADE Advanced Optics RD3-020 Raptor,
ADE Advanced Optics RD3-023 Valkyrie,
Holosun 407C,
Holosun 407C-GR,
Holosun 407CO,
Holosun 507C,
Holosun 507C-GR,
Holosun 507 Comp,
Holosun 507 Comp-GR,
Holosun 508T-RD,
Holosun 508T-GR,
Olight Osight C,
Olight Osight [RD],
Olight Osight [GR],
Olight Osight X,
Redwin Cobra 26x22 MTR,
Riton X3 Tactix PRD,
Spina BAT-24,
Swampfox Justice RMR 1×27,
Swampfox Liberty RMR 1×22,
Swampfox Kingslayer,
Trijicon RMR,
Trijicon SRO,
Vector Optics Frenzy 1x22x26,
Vector Optics Frenzy 1x22x26 MOS,
Vector Optics Frenzy 1x22x26 MOS MRS,
Vector Optics Frenzy-X 1x19x26 MRS GenII,
Vector Optics Frenzy-X 1x19x28 gen II,
Victoptics V3 1x17x26

Vector Optics Frenzy 1x22x26 MOS MRS red dot

(5)

$297.00 CAD

In stock (51 units)

View details
Holosun 507 Comp

(4)

$851.00 CAD

Very low stock (4 units)

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Sold out

Holosun 507 Comp GR

(2)

$970.00 CAD

View details
Vector Optics Frenzy 1x22x26 MOS red dot

(1)

$316.00 CAD

In stock (69 units)

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Vector Optics Frenzy-X 1x19x28 GenII

$334.00 CAD

Low stock (14 units)

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Holosun 507C X2

(3)

$769.00 CAD

Very low stock (2 units)

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Holosun 407C X2

(3)

$612.00 CAD

Very low stock (3 units)

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Sold out

Victoptics V3 1x17x26

$111.00 CAD

View details

How to mount red dot with Trijicon RMR footprint

It depends on what device you want to mount it.

Will you install it on a a picatinny mount? I.e. gun equipped with picatinny rail? Then you need to look for picatinny mount with RMR footprint.
Or will you mount it on a pistol? And will the pistol be optics ready (with pistol slide cut for red dot). Then you need to look for red dot mount with RMR footprint.
Or will it be standard pistol without such cut? Then you need to look for optic plate with RMR footprint.

Other footprint standards

There are many different bases for red dot sights, but the other most common are following:

LOCTITE THREADLOCKER: A MUST-HAVE FOR INSTALLING OPTICS | 0.5 ML

Easy to use and locks well!

It is ok.
Fast delivery.

Springfield [XD,XDM] & HS Produkt [XDM, HS-9, SF19] red dot mount | Shield RMSc footprint

Great

Perfect fit and great customer support. Shipping was fast.

KMR W-02 & L-02 Optics Ready plate | Shield RMSc footprint

Excelent quality

The plate fit very well on my APX A1 and installation instructions were clear

Beretta APX RDO, APX A1 Optics Ready plate universal | type F

Ottimo!

Perfetta per defender ccw vortex.
Ottimo anche optics spot....grandi

Walther PDP 2.0 [2022] plate | Shield RMSc footprint

Optics Ready plate | Trijicon RMR footprint

Perfect compatibility with my CZ SHADOW 2 COMP and HS507C. Easy to install.

CZ Shadow 2 Optics Ready plate | Trijicon RMR footprint

Fast delivery

Delivery to sweden took just a few days.
+ Screws included.
+ fast delivery

CZ Shadow 2 Optics Ready plate | Aimpoint Acro

Excellent quality

Fit the gun perfectly. It’s solidly built, made for heavy use and plenty of extra screws for no additional cost. Was shipped promptly and got to me within a week after ordering it…

Walther PDP 2.0 [2022] plate | Trijicon RMR footprint

Perfect fit

I was a bit worried after reading bad reviews about fitting.
Mine is absolutely perfect. Screws are spot on. I took my time to properly install the plate handle fitting the red dot screws as recommended.
Degrease, Loctite and 48 h drying.
I passed 700 9mm NATO without any loosing screws.
When using Irons sight, it shoot wayyyyyyy High. Unusable iron.
I’m really pleased with this item.

Springfield 1911 DS Prodigy optics ready plate with sights | Trijicon RMR footprint

Perfect fit!
CZ P10 F OR
Made in Czech Republic

CZ P-10 Optics Ready plate | Vortex Venom footprint

does the job

It fits perfectly

Beretta 92X, 92X RDO, M9A4 Optics Ready plate | Trijicon RMR footprint

Perfect.

Outer Impact is the best. A perfect red dot mount universal for my HS 507c on my glock 17.
An excellent trade.
I recommend.

Glock [G17, G19, G26 & other] red dot mount universal | type C

Almost perfect for a P226 x-six.

It would be even better if the opto rods were orange. Maybe it's possible to change! :-)

Sig Sauer P226 X-Five & P226 X-Six old variant adjustable rear sight | with fiber optics

Conforme

Support idéal pour un globe 24 et un Point Rouge Buchel, adaptation parfaite, je recommande

Glock 17, Glock 19, Glock 26 red dot mount | type S

Plaque Glock MOS | Empreinte Vortex Venom

Bonjour
J'ai actuellement cette plaque pour mon G45MOS optique Vector-Optic Frenzy -X 1X20X28 hélas ca fait 2 fois que le guide fileté se casse .

Glock MOS plate | Vortex Venom footprint

perfekt

Holosun 507C X2

Excellent on my CZ Shadow2 Compact!!!

Excellent service

Easy to order and overnight delivery to Belfast NI.
I will have no hesitation in using this company again. Very happy.

KMR S-02 Optics Ready plate | Trijicon RMR footprint

Besz for Shadow01

I did not have to machine the slide. It just pops on, you do not need gun master to install.
The plate covers the space between the itself and the slide. You can install it to the middle of the slide only. It does not move at all.