---
product_id: 44179960
title: "Dueck Defense RBU Mount & Back Up Sight Base Compatible with Glock and Trijicon RMR"
brand: "justchee"
price: "€ 2.99"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.hr/products/44179960-dueck-defense-rbu-mount-and-back-up-sight-base-compatible
store_origin: HR
region: Croatia
---

# Factory Fit CNC Machined Corrosion Resistant Dueck Defense RBU Mount & Back Up Sight Base Compatible with Glock and Trijicon RMR

**Brand:** justchee
**Price:** € 2.99
**Availability:** ❌ Out of Stock

## Summary

> 🔫 Elevate Your Aim with Confidence!

## Quick Answers

- **What is this?** Dueck Defense RBU Mount & Back Up Sight Base Compatible with Glock and Trijicon RMR by justchee
- **How much does it cost?** € 2.99 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/44179960-dueck-defense-rbu-mount-and-back-up-sight-base-compatible)

## Best For

- justchee enthusiasts

## Why This Product

- Trusted justchee brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Finish:** Nitride coating ensures a tough, matte black surface.
- • **Saltwater Ready:** Highly corrosion resistant, perfect for any environment.
- • **Lightweight Design:** Weighs only 0.08 kg for easy handling.
- • **Seamless Integration:** Uses factory rear sight dovetail—no modifications needed.
- • **Precision Engineering:** CNC machined in the USA for unmatched quality.

## Overview

The Dueck Defense RBU Mount & Back Up Sight Base is expertly designed for GLOCK handguns and compatible with Trijicon RMR red dots. Crafted from US Mill certified bar stock, this mount features a nitride coating for superior corrosion resistance, making it ideal for all environments. With a factory rear sight dovetail fit, installation is a breeze—no modifications required.

## Description

Dueck Defense designed the RBU as a simple no gunsmithing sight base to eliminate lost dots when aiming. Just align the fixed iron sights and your red dot is visible. It’s simple and it works.” Compatible with GLOCK Handguns. For use with Trijicon RMR Red Dot. Description Red Dot Back Up Sight Base mounting platform with integrated sights for your pistol. “I designed the RBU as a simple no gunsmithing sight base to eliminate lost dots when aiming. Just align the fixed iron sights and your red dot is visible. It’s simple and it works.” Made in the USA. FEATURES: CNC Machined in the USA from US Mill certified bar stock Nitride coated giving a super hard matte black surface finish that is highly corrosion resistant even in salt water environments Uses factory rear sight dovetail. No modification to your gun Compatible with most open top and red dot tactical holsters MADE IN THE USA

## Features

- Compatible with GLOCK Handguns
- For use with Trijicon RMR Red Dot.
- CNC Machined in the USA from US Mill certified bar stock
- Nitride coated giving a super hard matte black surface finish that is highly corrosion resistant even in salt water environments
- Uses factory rear sight dovetail. No modification to your gun

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Package Dimensions L x W x H | 7.09 x 4.49 x 1.5 inches |
| Package Weight | 0.08 Kilograms |
| Brand Name | Justchee |
| Manufacturer | Dueck Defense |
| Sport Type | Hunting |

## Images

![Dueck Defense RBU Mount & Back Up Sight Base Compatible with Glock and Trijicon RMR - Image 1](https://m.media-amazon.com/images/I/51T1P3lgtXL.jpg)
![Dueck Defense RBU Mount & Back Up Sight Base Compatible with Glock and Trijicon RMR - Image 2](https://m.media-amazon.com/images/I/51nHl0Ntj7L.jpg)
![Dueck Defense RBU Mount & Back Up Sight Base Compatible with Glock and Trijicon RMR - Image 3](https://m.media-amazon.com/images/I/61ewWW1zUJL.jpg)
![Dueck Defense RBU Mount & Back Up Sight Base Compatible with Glock and Trijicon RMR - Image 4](https://m.media-amazon.com/images/I/71RytvAc93L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to install and use
*by R***M on August 1, 2018*

I used this to mount a Holosun HS507C to my Glock 17 (the Holosun uses an RMR footprint). It was pretty easy to install (just be careful not to deform the aluminum if you have to tap it into place), though I had to get different mounting screws--the ones that came with it were too long for the sight. You'll need shorter #6 screws, I think 1/4" long. It has held up well through a few hundred rounds so far. One of these days I'll turn the sight off and try the backup sight feature, but this is definitely easier and faster than getting your slide milled, especially if you're on the fence about the MRDS concept and don't want to permanently modify anything yet.

### ⭐⭐⭐⭐⭐ Dependable red dot mount without having to alter your slide
*by J***S on August 22, 2019*

I like ease of install , very good option for my Glock 26 gen 5 so I didn't need to pay to get a slide cut. No need to permantly alter my Glock is a big win. I ran 400 rounds with no issues.

### ⭐⭐⭐⭐⭐ Solid Mount
*by T***W on March 18, 2018*

Easy and inexpensive way to install an optic on your pistol.

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**Shop now:** [https://www.desertcart.hr/products/44179960-dueck-defense-rbu-mount-and-back-up-sight-base-compatible](https://www.desertcart.hr/products/44179960-dueck-defense-rbu-mount-and-back-up-sight-base-compatible)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-08*