How to mount a Trijicon RMRcc on a Picatinny rail: it is a Trijicon RMRcc open-emitter reflex, so it takes a RMRcc-footprint Picatinny mount. Which mount to buy and the height to pick.

Updated 05 September 2026.

Scope Mount Finder / Every rail, tube and red-dot footprint

Fit a Trijicon RMRcc on a Picatinny rail

Name: Fit a Trijicon RMRcc on a Picatinny rail: published specification
Creator: Scope Mount Finder
License: https://creativecommons.org/licenses/by/4.0/

The Trijicon RMRcc is a Trijicon RMRcc optic. Here is the mount that puts it on a Picatinny rail and the footprint it must match.

Direct fitThe Trijicon RMRcc is a Trijicon RMRcc open-emitter reflex, so it mounts on a Picatinny rail through an RMRcc-footprint mount (a shrunk RMR pattern). Buy the RMRcc-footprint Picatinny mount, not a mount cut for any other footprint.

OpticTrijicon RMRccTrijicon RMRcc

interface

MountRMRcc-footprint Picatinny mount

seats on

RailPicatinny rail (MIL-STD-1913)5.23 mm slot, 10.01 mm pitch

Fit readoutBench figures

Fitment

Optic type

open-emitter reflex

Note

the RMRcc is a smaller cut than the full RMR; match the mount to RMRcc

Mount the Trijicon RMRcc

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The Trijicon RMRcc is cut to the Trijicon RMRcc footprint. To put it on a Picatinny rail you fit a RMRcc-footprint Picatinny mount: the mount carries the Trijicon RMRcc pattern on its top and clamps the rail below, so the sight screws down to the pattern it was made for.

A mount cut for a different footprint will not take the Trijicon RMRcc. Match the mount to the Trijicon RMRcc pattern, and pick the mount height for the cowitness or heads-up hold you want on the rifle or carbine.

Related fitments

›Trijicon RMRcc footprint and mountthe optic
›Trijicon RMRcc footprintthe pattern
›How this footprint reaches a railthe general fit
›Picatinny rail (MIL-STD-1913)the base

Questions and answers

Fit a Trijicon RMRcc on a Picatinny rail?

The Trijicon RMRcc is a Trijicon RMRcc open-emitter reflex, so it mounts on a Picatinny rail through an RMRcc-footprint mount (a shrunk RMR pattern). Buy the RMRcc-footprint Picatinny mount, not a mount cut for any other footprint.