The EGW Iver Johnson 1911 Trijicon RMR sight mount is a direct-replacement mount that converts your Iver Johnson 1911's rear dovetail into a platform for modern red dot optics. If you're running an Iver Johnson 1911 and want the speed and precision of a red dot without gunssmithing, this is a bolt-on solution: simply remove your factory rear sight, install the EGW mount in its place, and you're ready to attach a Trijicon RMR or compatible red dot. No permanent alterations, and you can swap back to iron sights whenever you want.
Built from 7075 aluminum with a matte black hardcoat finish, this mount is engineered for durability on the range and in the field. The compact profile keeps your sight line fast and uncluttered. All necessary mounting hardware is included—two flat-head cap screws for your red dot and a set screw for dovetail retention—along with simple, straightforward installation instructions. The design is slim enough not to interfere with your grip or trigger access, so the ergonomics of your 1911 stay intact.
This mount is purpose-built for Iver Johnson 1911s and also fits Baby Desert Eagle (Post 2006) and EAA Witness Elite Match platforms. It is not compatible with Rock Island 1911s. If you're pairing it with a Trijicon RMR or Holosun HS507C, you'll have a rock-solid foundation for rapid target acquisition and longer-range shooting—all without the permanent commitment of milling your slide.
Key Features
- 7075 aluminum construction with matte black hardcoat finish
- Direct dovetail mount—no gunsmithing or slide milling required
- Fits Trijicon RMR and Holosun HS507C red dots
- All mounting hardware included (cap screws and set screw)
- Reversible—remove the mount and reinstall your factory rear sight anytime
- Compact design preserves 1911 ergonomics and sight picture
Specifications
| Material | 7075 Aluminum |
| Finish | Matte Black Hardcoat |
| Overall Length | 1.780" |
| Overall Width | 1.1" |
| Compatible Red Dots | Trijicon RMR, Holosun HS507C |
| Fits | Iver Johnson 1911, Baby Desert Eagle (Post 2006), EAA Witness Elite Match |
| Does Not Fit | Rock Island 1911s |
| Mounting Hardware | 2x 6-32 Flat Head Cap Screws, 1x 6-32 X 3/16" Set Screw |
| Hardware Wrench Size | 5/64" Allen Wrench (for red dot mounting) |
Frequently Asked Questions
What Iver Johnson 1911 models does this mount fit?
This mount is designed for Iver Johnson 1911 platforms and mounts directly into the rear sight dovetail. It also fits Baby Desert Eagle (Post 2006) and EAA Witness Elite Match models. It is not compatible with Rock Island 1911s.
What red dot sights work with this mount?
The EGW mount is compatible with the Trijicon RMR and Holosun HS507C. Both sit securely on the mount using the included flat-head cap screws.
Do I need a gunsmith to install this, or is it really tool-free?
No gunsmith is required. The mount replaces your factory rear sight in the dovetail—no milling, no permanent modifications. You'll need to remove your old rear sight and tighten the provided set screw and mounting screws with a 5/64" Allen wrench. The included installation instructions walk you through the simple process.
What hardware is included, and do I need to buy anything extra?
The mount ships with two 6-32 flat-head cap screws (for your red dot), one 6-32 X 3/16" set screw (for dovetail retention), and all other fasteners needed for installation. You do not need to purchase additional hardware. The installation guide recommends applying blue Loctite to the cap screws and torquing them to 15 in-lbs.
