Egw Ruger~ Mki, Ii, Iii, Iv, P85, P90 Trijicon Rmr Sight Mount
$44.99
The EGW Ruger RMR sight mount is a direct-replacement rear sight solution for Ruger Mark I, II, III, IV, P85, and P90 pistols that allows you to run a Trijicon RMR or Holosun HS507C red dot without any permanent modifications to your firearm. Simply remove your factory rear sight, install this mount in the existing dovetail, and you're ready to mount your optic. If you ever want to go back to iron sights, pull the mount and reinstall your original rear sight—no gunsmithing required.
Built from 7075 aluminum and finished in matte black hardcoat, this mount is compact and durable. The design keeps your sight-mounting footprint minimal while offering rock-solid hold of your red dot. EGW handles all the hardware you need: two flat-head cap screws (5/64" allen wrench) for the RMR, one set screw for the dovetail, and everything required for installation. The whole package is engineered to put your optic where it belongs and stay there through hard use.
If you're looking to modernize a Ruger semi-auto without welding, drilling, or milling, this mount bridges the gap between classic iron-sight guns and current optics standards. It's the quickest way to add a proven red dot to your Ruger and keep the option to revert if needed.
Key Features
- Direct replacement for factory rear sight—no gunsmithing or permanent modifications
- Fits Ruger Mark I, II, III, IV, P85, and P90 pistols
- 7075 aluminum construction with matte black hardcoat finish
- Compatible with Trijicon RMR and Holosun HS507C red dot sights
- All mounting hardware and screws included
- Reversible installation—swap your rear sight back anytime
Specifications
| Material | 7075 Aluminum |
| Finish | Matte Black Hardcoat |
| Overall Length | 1.780" |
| Overall Width | 1.1" |
| Red Dot Compatibility | Trijicon RMR, Holosun HS507C |
| Mounting Hardware | (2) 6-32 Flat Head Cap Screws, (1) 6-32 × 3/16" Set Screw |
| Allen Wrench Size | 5/64" |
| Recommended Torque | 15 in/lbs |
Frequently Asked Questions
Does this mount work with all Ruger semi-auto pistols?
No. This mount is specifically designed for Ruger Mark I, II, III, IV, P85, and P90 pistols. It fits in the factory rear sight dovetail of these models only.
Can I use this mount with other red dot sights?
This mount is tested and designed for the Trijicon RMR and Holosun HS507C. Compatibility with other optics is not stated in the product specs.
What hardware comes with the mount?
The mount includes two 6-32 flat head cap screws (for RMR attachment), one 6-32 × 3/16" set screw (for dovetail retention), and the hardware required for installation. You'll need a 5/64" allen wrench to install the mounting screws.
Is permanent modification to my pistol required?
No. The mount replaces your rear sight using the existing dovetail. Your firearm requires no drilling, welding, or milling. You can remove the mount and reinstall your factory rear sight at any time.
