---
product_id: 87159303
title: "UTG Super Slim RDM20 Mount for Rear Sight Dovetail"
brand: "utg"
price: "$30.17"
currency: USD
in_stock: true
reviews_count: 13
category: "Utg"
url: https://www.desertcart.us/products/87159303-utg-super-slim-rdm20-mount-for-rear-sight-dovetail
store_origin: US
region: United States of America
---

# 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:** $30.17
**Availability:** ✅ In Stock

## Summary

> 🔫 Elevate your aim with precision and stealth — the mount that means business.

## Quick Answers

- **What is this?** UTG Super Slim RDM20 Mount for Rear Sight Dovetail by utg
- **How much does it cost?** $30.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/87159303-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

- • **Sleek, Ultra-Low Profile:** At just 0.16" saddle height, it keeps your red dot sight as close to the slide as possible for a minimalist, tactical edge.
- • **Rock-Solid Zero Retention:** Locking Torx screws and dovetail insert ensure zero wobble even after 1000+ rounds—no compromises on accuracy.
- • **Tailored for S&W M&P Pistols:** Specifically designed for Smith & Wesson M&P double stack pistols, guaranteeing perfect fit and flawless performance.
- • **Precision Engineered Durability:** Crafted from premium 6061-T6 aircraft aluminum for unmatched strength without bulk.
- • **Tool-Included, No Gunsmith Needed:** Comes with all hardware and tools for quick, no-permanent-mod installation—get setup and shooting faster.

## Overview

The UTG Super Slim RDM20 Mount is a precision CNC-machined rear sight dovetail adapter made from durable 6061-T6 aircraft aluminum with a matte black finish. Designed specifically for Smith & Wesson M&P double stack pistols, it offers an ultra-low 0.16" saddle height to maintain a sleek profile while securely mounting red dot sights. Featuring locking Torx screws and a dovetail insert, it guarantees stable zero retention even under heavy recoil. Installation is straightforward with included hardware and tools, requiring no permanent firearm modifications. Backed by a lifetime warranty, this mount is a top-tier choice for shooters seeking reliability, style, and performance.

## Description

desertcart.com: UTG Super Slim RDM20 Mount for Rear Sight Dovetail, S&W M&P , Black : 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: 1000 rounds with no wiggle - This mount is legit. I have it on my Sig P226, I have put just shy of 1000 rounds through it with this mount on and it hasn't loosened not one bit. I had first bought the Ade optics dovetail mount because of the price and to try out a red dot optic. You definitely get what you pay for. That mount kept getting loose after about 50 rounds or so. After that experience I had almost given up on thinking these things would work, until I convinced myself to give it another shot with this UTG. I'm glad I did. I highly recommend this product, no need to spend the money and the time it takes to get your slide milled to have a red dot on your pistol, when you can just get this mount.

## Features

- Precision CNC Machined from 6061-T6 Aircraft Aluminum with a Matte Black Finish
- Low Profile 0.16" Saddle Height Positions RDM20 as Low as Possible Without Sacrificing Structural Integrity and Performance
- Utilizes Locking Torx Screws and Dovetail Insert for a Secure Zero Hold
- Compatible with Smith & Wesson M&P 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 | B07G4MC9JY |
| Best Sellers Rank | #121,191 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #91 in Hunting Trophy Mounts |
| Brand Name | UTG |
| Color | Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (488) |
| Global Trade Identification Number | 04717385553965 |
| Included Components | Pistol Mount S&W Dovetail Insert,#6-48 T10 Torx Screw x3,T10 Torx Wrench |
| Item Dimensions | 3 x 3 x 1 inches |
| Item Type Name | Rear Sight Dovetail Mount |
| Item Weight | 0.52 Ounces |
| Manufacturer | Leapers, Inc. |
| Manufacturer Part Number | RDM-20SW |
| Manufacturer Warranty Description | Lifetime Warranty |
| Material Type | Other |
| Model Number | RDM-20SW |

## Product Details

- **Brand:** UTG
- **Color:** Black
- **Item Weight:** 0.52 Ounces
- **Item dimensions L x W x H:** 3 x 3 x 1 inches
- **Material:** Other

## Images

![UTG Super Slim RDM20 Mount for Rear Sight Dovetail - Image 1](https://m.media-amazon.com/images/I/611AV4Kr07L.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Will this fit the s&w m&p 9c?**
A: It fit my S&W M&P 9c very well.

**Q: i am looking at the S&W dovetail.  is this a 3/8" dovetail?  i am looking to replace the rear sight on my winchester 1892.**
A: It’s .16” in height and I bought it for my Glock 19 gen 4 and yes the red dot vortex venum fits perfect on it.  As far as this working on your Winchester probably not

**Q: Will this dovetail mount work with a sig sauer romeo zero micro red dot sight?**
A: No

**Q: Does it work for the vortex viper**
A: Yes

## 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.

### ⭐⭐⭐⭐⭐ 1000 rounds with no wiggle
*by D***P on March 31, 2019*

This mount is legit. I have it on my Sig P226, I have put just shy of 1000 rounds through it with this mount on and it hasn't loosened not one bit. I had first bought the Ade optics dovetail mount because of the price and to try out a red dot optic. You definitely get what you pay for. That mount kept getting loose after about 50 rounds or so. After that experience I had almost given up on thinking these things would work, until I convinced myself to give it another shot with this UTG. I'm glad I did. I highly recommend this product, no need to spend the money and the time it takes to get your slide milled to have a red dot on your pistol, when you can just get this mount.

### ⭐⭐⭐⭐ 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.

## Frequently Bought Together

- UTG Super Slim RDM20 Mount for Rear Sight Dovetail
- UTG OP3 Micro, Red 4 MOA Single Dot, RMR Footprint
- Monstrum Dovetail Red Dot Mounting Plate for Glock Pistols | for Non-MOS Version Glocks | Compatible with Glock 17 19 20 21 22 23 34 35 40 41 45 47

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-27*