Trijicon RMR type 2 in detail

Trijicon RMR is one of the most famous red dots on the market. Its simple footprint also became a standard used used by many other manufacturers. This article is not a review of the red dot as such. Instead we provide you with details on the Trijicon RMR type 2 red dot so that you can better decide whether to get this one or not.

Mounting compatibility

Compatibility of red dots is measured by so called footprint.

What does footprint stand for? Well as any other footprint, it tells us what does the bottom of the red dot look like. And by that information we will understand what kind of mounting device we have to use in order to fit the red dot.

Why is it important? It is one thing to get the best red dot, but it can be another thing to be able to mount the red dot to the gun you want. Luckily, most of the manufacturers share 4 or 5 main types of footprints to accomodate its red dots.

Trijicon RMR type 2 footprint

Trijicon RMR red dots (first generation as well as type 2) are so popular that its footprint became a standard on the market. Thanks to that you can use many other red dots sharing the Trijicon RMR footprint standard to the same mounting devices as Trijicon RMR itself – whether red dot mount or red dot plate.

If you wonder which other red dots share the Trijicon RMR footprint, and thus can use the very same mounting devices as Trijicon RMR, check out this more detailed article: red dot sights compatible with Trijicon RMR footprint.

Trijicon RMR footprint standard

Trijicon RMR footprint consists of two pins in the front that will slide into the bottom of the red dot, and two holes for screws to fixate the red dot to the base from the top.

Screws for mounting of the red dot to the plate are always included in the red dot package.


Trijicon RMR type 2 is a compact sized red dot.

Trijicon RMR type 2 dimensions

The dimensions of the red dot are following:

Length: 45.7mm / 1.8 in
Width: 27.9mm / 1.1 in
Height: 25.4mm / 1 in
Weight: 34g / 1.2 ozTrijicon RMR type 2 window sizeThe dimensions of the red dot window is following:

Width: 22mm / 0.87 in
Height: 16mm / 0.63 in


You can download the following:

Frequently asked questions

You may be looking for answers to one of these questions. For each find the answer below.

How to turn off Trijicon RMR?

The non-adjustable Trijicon RMR type 2 is always on and cannot be turned off manually.

Instead the red dot adjusts brightness by surrounding light conditions.

How to mount Trijicon RMR on pistol?

To mount a Trijicon RMR on pistol you need a red dot mount that replaces the rear sight. Such mount has to use Trijicon RMR footprint.

Alternatively you can get your slide milled in order to accomodate red dot.

If your gun is optics ready – i.e. with milled slide – then you need a red dot plate with Trijicon RMR footprint.

How to adjust Trijicon RMR?

To adjust height you have to use the elevation screw on top of the tail of the red dot.

To adjust side you have to use the windage screw on the right side of the housing of the red dot.

One click is 1 MOA.

What battery does Trijicon RMR use?

Trijicon RMR uses battery type CR2032.

How long does the batter last in Trijicon RMR?

Trijicon recommends replacings the battery every year.

However, when the red dot is stored the battery can last up to 5 years.

Where is Trijicon RMR made?

Trijicon RMR is made in USA.

Technical data

Length x Width x Height: 
1.8 in x 1.1 in x 1 in (45.72mm x 27.94mm x 25.4mm)
1.2 oz. (34.02g)
Reticle Pattern
3.25 MOA Dot / 6.5 MOA Dot
Day Reticle Color
Night Reticle Color
Bullet Drop Compensating (BDC)
Bindon Aiming Concept™ (BAC)
Illumination Source
Power Source
1x CR2032 Lithium Battery
Battery Life
Up to 2 years of typical use*, up to 5 years in dark storage. *When used at 70ºF (21ºC). Extreme temperatures (high or low) will affect lithium battery performance.
1 MOA Per Click
Not Included
Housing Material
Forged Aluminum


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