---
product_id: 87159261
title: "UTG Super Slim RDM20 Mount for Rear Sight Dovetail"
brand: "utg"
price: "¥4801"
currency: JPY
in_stock: true
reviews_count: 13
category: "Utg"
url: https://www.desertcart.jp/products/87159261-utg-super-slim-rdm20-mount-for-rear-sight-dovetail
store_origin: JP
region: Japan
---

# Ultra Low 0.16" Saddle Height Locking Torx Screws & Secure Dovetail Insert 6061-T6 Aircraft Aluminum CNC Machined UTG Super Slim RDM20 Mount for Rear Sight Dovetail

**Brand:** utg
**Price:** ¥4801
**Availability:** ✅ In Stock

## Summary

> 🔫 Elevate your Glock game with precision and style — mount like a pro, shoot like a legend!

## Quick Answers

- **What is this?** UTG Super Slim RDM20 Mount for Rear Sight Dovetail by utg
- **How much does it cost?** ¥4801 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/87159261-utg-super-slim-rdm20-mount-for-rear-sight-dovetail)

## Best For

- utg enthusiasts

## Why This Product

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

## Key Features

- • **Rock-Solid Zero Retention:** Locking Torx screws combined with a dovetail insert ensure your optic stays perfectly aligned, even under heavy recoil.
- • **Sleek, Low-Profile Design:** At just 0.16" saddle height, it keeps your red dot sight as close to the slide as possible for a streamlined look and faster target acquisition.
- • **Tailored for Glock Pistols:** Specifically designed to fit Glock double stack pistols’ rear sight dovetail for seamless compatibility and confident mounting.
- • **Precision Engineered Durability:** Crafted from premium 6061-T6 aircraft-grade aluminum for unmatched strength without the bulk.
- • **Tool-Included Hassle-Free Installation:** Comes with all necessary hardware and tools—no gunsmithing or permanent modifications required, so you’re ready to roll in minutes.

## Overview

The UTG Super Slim RDM20 Mount is a precision CNC-machined aluminum mount designed for Glock rear sight dovetails. Featuring an ultra-low 0.16" saddle height, locking Torx screws, and a secure dovetail insert, it offers a durable, low-profile platform for red dot sights. Easy to install with included hardware and tools, it enhances shooting accuracy and reliability without permanent firearm modifications.

## Description

desertcart.com: UTG Super Slim RDM20 Mount for Rear Sight Dovetail, Glock : Sports & Outdoors

Review: This mount is sure to elevate your setup. - This product was provided as part of the Vine reviewer program; please consider this an objective review. Some of the items can be reviewed by a simple one sentence. Sometime I am brutally honest and that it is only my opinion. I have nothing to gain or lose either way. This is my review on the UTG Super Slim RDM20 Mount for Rear Sight Dovetail The UTG Super Slim RDM20 Mount for Rear Sight Dovetail stands out as an innovative solution for shooters looking to enhance their firearm's reliability and versatility. This compact mount is specifically designed to fit rear sight dovetail cuts, enabling the attachment of a variety of red dot sights while maintaining a low profile. #### Design and Build Quality The UTG Super Slim RDM20 is crafted from high-quality aluminum, which ensures durability without adding excessive weight. Its sleek design keeps the profile low, making it an ideal choice for those who prefer a minimalist setup. The mount has a matte black finish, which is not only aesthetically pleasing but also helps reduce glare, enhancing performance in varied lighting conditions. #### Installation and Compatibility One of the standout features of the RDM20 mount is its ease of installation. It comes with all necessary hardware and requires minimal tools, allowing users to attach it quickly and efficiently to their firearm’s dovetail without professional assistance. The mount is designed to fit a wide range of rear sight cuts, providing versatility for different models. However, it’s always wise to verify compatibility with your specific firearm model before purchasing. #### Performance In terms of performance, the UTG RDM20 excels. Once mounted, it provides a stable and secure platform for red dot sights, minimizing any potential wobble that could affect accuracy. Moreover, the low-profile design keeps the sight line intact, ensuring that users can maintain their traditional sight alignment when necessary. The mount positions the optic at the perfect height for quick target acquisition—an essential factor during dynamic shooting scenarios. #### Additional Features The mount features a straightforward clamp mechanism that locks securely onto the dovetail, offering peace of mind that it will stay in place even under heavy recoil. Additionally, the lightweight construction does not interfere with the balance of the firearm, making it an excellent choice for competitive shooting and tactical applications alike. #### Conclusion In summary, the UTG Super Slim RDM20 Mount for Rear Sight Dovetail impresses with its robust construction, ease of installation, and reliable performance. It’s an excellent addition for anyone looking to enhance their shooting experience with a red dot sight while keeping things streamlined. While there are various mounts available on the market, the RDM20 proves to be a standout option, effectively combining functionality and style at an affordable price point. Whether you’re a competitive shooter or a recreational enthusiast, this mount is sure to elevate your setup.
Review: Seems Solid, But There Could Be Installation Issues - This was purchased for a Glock 19 Gen 4, to mount the inexpensive UTG red dot sight. The Glock rear sight is removed, an insert installed into the dovetail slot, and the sight mounting base attached to the insert with two screws. This seems to be a solid platform, and my sight appears to be quite secure when mounted. A slight collar around each hole in the dovetail provides good indexing of the sight base. Mounting screws come with a bit of blue thread locker applied. The potential installation issue is that the insert is extremely tight in the dovetail slot - not much chance that the mount will drift sideways with use. This is similar to, or perhaps tighter than, a replacement sight. Fortunately I already had a sight pusher tool; I would not have been able to tap this insert into place with a mallet and drift punch. An alternative would be to file a bit off the insert, but it is small and may be difficult to work with. The "Ade Advanced Optics Glock Tactical Mini Dotx Sight Pistol Mount Base" (also sold on desertcart) may be a better option for those without sight pushers. My ADE dovetail insert for another Glock pistol fit loosely enough to be easily inserted by hand. The mounting base is slightly curved on the sides, conforming to a stock Glock slide to both capture the insert and to be self-centering. The base mounting screws tighten up the assembly and hold it in place. The UTG mount fits the ADE sight, and the ADE mount accommodates the UTG sight. This seems to be a somewhat "standard" pattern used by Burris, Docter, Vortex, and others. This type of mount can be very good for those who want to experiment with inexpensive red dots before buying higher-end sights and milled slides, though the sight will sit noticeably higher without slide milling. The UTG has been a high quality mount so far.

## Features

- Precision CNC Machined from 6061-T6 Aircraft Aluminum with a Matte Black Finish
- Low Profile 0. 16" Saddle Height Positions UTG RDM20 Reflex Micro Dot as Low as Possible Without Sacrificing Structural Integrity and Performance
- Utilizes Locking Torx Screws and Dovetail Insert for a Secure Zero Hold
- Compatible with Glock Double Stack Pistols and Easily Installs into Rear Sight Dovetail
- Includes Installation Hardware and Tools, Requiring No Permanent Modification
- NOTE: We recommend to tighten the #6-48 screw with torque value of about 12 inch-lb.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G46F74L |
| Best Sellers Rank | #82,252 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #84 in Hunting Trophy Mounts |
| Brand Name | UTG |
| Color | Black |
| Customer Reviews | 4.1 4.1 out of 5 stars (481) |
| Date First Available | July 5, 2018 |
| Included Components | Pistol Mount Glock Dovetail Insert,#6-48 T10 Torx Screw 5.5mm Length X3,#6-48 T10 Torx Screw X3,T10 Torx Wrench |
| Item Package Dimensions L x W x H | 4.96 x 2.72 x 0.2 inches |
| Item Weight | 0.53 Ounces |
| Manufacturer | Leapers, Inc. |
| Material | Aluminum |
| Model Name | RDM-20GL |
| Number of Items | 1 |
| Package Weight | 0.02 Kilograms |
| Part Number | RDM-20GL |
| Size | for Glock Rear Sight |
| Sport Type | Hunting, Tactical & Military |
| Style | Dovetail |
| Suggested Users | unisex-adult |
| Warranty Description | Life Time |

## Images

![UTG Super Slim RDM20 Mount for Rear Sight Dovetail - Image 1](https://m.media-amazon.com/images/I/61XntW+jRrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ This mount is sure to elevate your setup.
*by H***R on October 1, 2024*

This product was provided as part of the Vine reviewer program; please consider this an objective review. Some of the items can be reviewed by a simple one sentence. Sometime I am brutally honest and that it is only my opinion. I have nothing to gain or lose either way. This is my review on the UTG Super Slim RDM20 Mount for Rear Sight Dovetail The UTG Super Slim RDM20 Mount for Rear Sight Dovetail stands out as an innovative solution for shooters looking to enhance their firearm's reliability and versatility. This compact mount is specifically designed to fit rear sight dovetail cuts, enabling the attachment of a variety of red dot sights while maintaining a low profile. #### Design and Build Quality The UTG Super Slim RDM20 is crafted from high-quality aluminum, which ensures durability without adding excessive weight. Its sleek design keeps the profile low, making it an ideal choice for those who prefer a minimalist setup. The mount has a matte black finish, which is not only aesthetically pleasing but also helps reduce glare, enhancing performance in varied lighting conditions. #### Installation and Compatibility One of the standout features of the RDM20 mount is its ease of installation. It comes with all necessary hardware and requires minimal tools, allowing users to attach it quickly and efficiently to their firearm’s dovetail without professional assistance. The mount is designed to fit a wide range of rear sight cuts, providing versatility for different models. However, it’s always wise to verify compatibility with your specific firearm model before purchasing. #### Performance In terms of performance, the UTG RDM20 excels. Once mounted, it provides a stable and secure platform for red dot sights, minimizing any potential wobble that could affect accuracy. Moreover, the low-profile design keeps the sight line intact, ensuring that users can maintain their traditional sight alignment when necessary. The mount positions the optic at the perfect height for quick target acquisition—an essential factor during dynamic shooting scenarios. #### Additional Features The mount features a straightforward clamp mechanism that locks securely onto the dovetail, offering peace of mind that it will stay in place even under heavy recoil. Additionally, the lightweight construction does not interfere with the balance of the firearm, making it an excellent choice for competitive shooting and tactical applications alike. #### Conclusion In summary, the UTG Super Slim RDM20 Mount for Rear Sight Dovetail impresses with its robust construction, ease of installation, and reliable performance. It’s an excellent addition for anyone looking to enhance their shooting experience with a red dot sight while keeping things streamlined. While there are various mounts available on the market, the RDM20 proves to be a standout option, effectively combining functionality and style at an affordable price point. Whether you’re a competitive shooter or a recreational enthusiast, this mount is sure to elevate your setup.

### ⭐⭐⭐⭐ Seems Solid, But There Could Be Installation Issues
*by S***5 on July 21, 2019*

This was purchased for a Glock 19 Gen 4, to mount the inexpensive UTG red dot sight. The Glock rear sight is removed, an insert installed into the dovetail slot, and the sight mounting base attached to the insert with two screws. This seems to be a solid platform, and my sight appears to be quite secure when mounted. A slight collar around each hole in the dovetail provides good indexing of the sight base. Mounting screws come with a bit of blue thread locker applied. The potential installation issue is that the insert is extremely tight in the dovetail slot - not much chance that the mount will drift sideways with use. This is similar to, or perhaps tighter than, a replacement sight. Fortunately I already had a sight pusher tool; I would not have been able to tap this insert into place with a mallet and drift punch. An alternative would be to file a bit off the insert, but it is small and may be difficult to work with. The "Ade Advanced Optics Glock Tactical Mini Dotx Sight Pistol Mount Base" (also sold on Amazon) may be a better option for those without sight pushers. My ADE dovetail insert for another Glock pistol fit loosely enough to be easily inserted by hand. The mounting base is slightly curved on the sides, conforming to a stock Glock slide to both capture the insert and to be self-centering. The base mounting screws tighten up the assembly and hold it in place. The UTG mount fits the ADE sight, and the ADE mount accommodates the UTG sight. This seems to be a somewhat "standard" pattern used by Burris, Docter, Vortex, and others. This type of mount can be very good for those who want to experiment with inexpensive red dots before buying higher-end sights and milled slides, though the sight will sit noticeably higher without slide milling. The UTG has been a high quality mount so far.

### ⭐⭐⭐⭐⭐ Works great with Vortex Viper
*by T***T on September 17, 2020*

I bought this to mount a Vortex Viper on my M&P. It looks great, very sturdy, it's slimmer and build quality is much nicer than the ADE dovetail mount. Highly recommended if you're looking to try a pistol optic before committing the funds for an RMR and milled slide. Update: put about 200 rounds with this on, seems to have no problems holding zero. I put loctite on the mounting screws and I used the ones that came with the Vortex. Very happy with it so far.

## Frequently Bought Together

- UTG Super Slim RDM20 Mount for Rear Sight Dovetail
- UTG Super Slim RMR Mount, for Glock Rear Sight Dovetail, Black

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-04-23*