Which red dot sight shares the same footprint as the Trijicon RMR red dot? In this article we will go through the complete list of compatible optics.
RMR footprint dimensions
The Trijicon RMR footprint consists of two sockets in the front of the sight and two screw holes in the center of the pistol red dot.
The distance between front and rear sockets is 22,3mm (0.88 inches).
The distance between the sockets in the front is then 22,5mm (0.89 inches).
The screw holes are positioned in the center part of the red dot sight. These function for fixation of the sight to the mount. These two screw holes are 18,8mm (0.74 inches) far from each other.
List of RMR footprint pistol red dots
Trijicon RMR base pattern is very popular for compact sized red dot sight manufacturers. Other than Trijicon itself you can find also top quality red dots from Holosun sharing the same footprint, Swampfox, ADE or Riton.
Every year there are more and more red dot sights with the RMR pattern. That allows you to mount the pistol red dot using the same mounting device as for RMR standard.
Below you can find a complete list of current red dots sharing the same mounting pattern:
ADE Advanced Optics
- ADE Advanced Optics RD3-019 Stingray
- ADE Advanced Optics RD3-020 Raptor
- ADE Advanced Optics RD3-023 Valkyrie
Holosun
- Holosun 407C
- Holosun 407C X2
- Holosun 507C
- Holosun 507C X2
- Holosun 507COMP
- Holosun 508T
Riton
- Riton X3 Tactix PRD
Swampfox
- Swampfox Justice RMR 1×27
- Swampfox Liberty RMR 1×22
- Swampox Kingslayer
Trijicon
- Trijicon RMR
- Trijicon SRO
Vector Optics
- Vector Optics Frenzy 1x22x26
See the up-to-date list of compatible red dots at the Trijicon RMR footprint standard post here.
Red dot mounts using the same footprint
There are many options how to mount the red dot to your pistol.
Below we go through all of the possible methods.
Plates
These are to be used for pistols that have already from production slide cut – be it “optics ready” models or “MOS” models.
Plates are designed to fit a universal slide cut and make it a specific surface that will fit specific red dots. There are also guns cut from production which will accomodate specific footprint, but those are less common. Usually you will find out universal cut and plate which will make it into specific footprint.
As the Trijicon RMR pattern is one of the oldest on the market and up to today one of the most popular footprints, you can easily find adapter plate with this footprint for any optics ready pistols out there on the market.
Mounts
Another option is a RMR footprint red dot mount. Based on the mounting surface, there are two types of these.
Picatinny mounts
Mounts for picatinny are the most common mounting devices available. These are most often used for carbines as that is the standard optic mounting surface for such guns.
If any RMR footprint red dot mount fits picatinny rail, it will also fit weaver rail.
Dovetail mounts
Dovetail mounts function as a replacement of a rear sight in the dovetail cut.
These mounts have a base shaped in the same type as the dovetail cut of a gun. Once you remove the sight from its position, you can just replace it with the mount and it will work as a mounting device for the pistol red dot sights.
There are different dovetail mounts for different footprints as well as for different handguns.
Milled slide
Third option is to get your slide milled. This option works for standard pistols (non optics ready).
Milling makes the gun ready for specific optics. That means that you no longer need to use any plate to instal the red dot, the milling process cuts the slide in its desired pattern already.
With milling you can also specify the exact position of the cut and also possibly the position of the cowitness sights.
Big benefit is that you do not need any additional plates or mounts because the red dot just fits into the cut.
On the negative side though, once you modify your gun this way, you usually lose warranty as it is a permanent change of the pistol. Thus such operation is on your own risk.
Most popular red dots with Trijicon RMR footprint
Which RMR footprint red dots are the most popular among shooters? We dont make a complete list here, but here are two most common red dots sharing the RMR pattern.
Holosun 507C
507C from Holosun is one of the most popular handgun red dots on the market today. Its designed to fit full sized pistol and has several unique features that make this optics very interesting choice. Especially for the money it costs.
The 507C has Shake Awake system allowing the red dot to turn on without clicking any buttons.
It also has Multi-Reticle System with red dot in the middle and circle surrounding it. Making it easier to find the dot.
The housing of this red dot sight is also made of durable aluminium (7075), making it all good choice for harsh treatment as well. Battery life is more than 50 000 hours.
Check the current availability and pricing of Holosun 507C red dot here:
Trijicon RMR
Extreme durability and excellent quality, that summarizes Trijicon RMR.
This world renown red dot was designed to mtach the qualities of legendary ACOG riflescope. RMR (Ruggedized Miniature Reflex) is made of extremely durable aluminium forged body designed to survive basically anything.
