Let’s Talk About Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail
The Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail promises a streamlined solution for mounting a micro red dot sight to your SIG P-series pistol. Offered by Leapers UTG, this mount replaces the rear sight, offering a supposedly easy and low-profile way to add red dot capability. It’s designed for the UTG RDM20 reflex sight, and the low price point certainly grabs attention.
I’ve been exploring options to modernize my older SIG P226 without the expense of a full slide milling. The promise of a simple dovetail mount was appealing. I was particularly drawn to the idea of a super-slim profile, maintaining the pistol’s balance and concealability.
Upon receiving the mount, the first thing I noticed was its lightweight construction. The matte black finish on the aircraft aluminum seemed durable enough. The machining appeared clean, though a closer inspection revealed some minor imperfections around the edges.
I also considered the Strike Industries Universal Optics Mount and the Night Fision Optics Ready Stealth Kit. However, the UTG’s lower price and slim profile initially made it seem like the best option for my needs. I was hoping it would provide a budget-friendly and straightforward upgrade.
My initial reaction was cautiously optimistic. The low price made me slightly skeptical about long-term durability, but the potential for easy installation and a slim profile outweighed my concerns at that moment. I was eager to see how it would perform on the range.
Real-World Testing: Putting Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail to the Test
First Use Experience
My first experience with the Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail was at my local indoor shooting range. I attempted to install the mount on my SIG P226. Unfortunately, I immediately encountered issues.
The mount was significantly too tight for the dovetail, requiring excessive force to even begin installation. Concerned about damaging my slide, I stopped after only a few attempts.
Extended Use & Reliability
Given the initial fitting problems, I couldn’t even begin to assess extended use or reliability. The mount remained uninstalled. I was unwilling to risk damaging my pistol to force a poorly fitting piece of equipment.
The product’s inability to fit properly rendered any discussion of durability or maintenance moot. The experience was a complete disappointment. It underscored the importance of precise manufacturing, especially for critical firearm components.
Breaking Down the Features of Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail
Specifications
The Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail is constructed from 6061-T6 Aircraft Grade Aluminum, finished with a matte black coating. It is designed specifically for SIG P-Series double-stack pistols and the UTG RDM20 reflex sight (Docter footprint). Its dimensions are 0.16″ saddle height, 1.84″ length, and 1.10″ width.
These specifications suggest a lightweight and compact design. The aluminum construction should theoretically provide adequate strength. The key specification that matters most is the dovetail fit. A precise fit is absolutely essential for secure and reliable mounting.
Performance & Functionality
Given the severe fitment issues I encountered, the performance and functionality of this mount were essentially non-existent. It could not be properly installed. The primary function of securely attaching a red dot sight was therefore unattainable.
The mount’s most significant weakness is its dimensional accuracy. If it doesn’t fit, none of the other features matter. It completely failed to meet even the most basic expectations.
Design & Ergonomics
The design aims for a slim and low-profile aesthetic. The material feels lightweight. However, the poor machining tolerances overshadow any positive design considerations.
The installation process, which should be straightforward, becomes a major obstacle due to the poor fit. There is no user-friendliness if the product can’t even be attached.
Durability & Maintenance
It is difficult to assess durability, as the mount was never successfully installed or used. The aluminum construction should be reasonably durable. The matte black finish should resist corrosion.
Maintenance should be simple, requiring only occasional cleaning. However, the lack of usability renders any assessment of long-term maintenance irrelevant.
Accessories and Customization Options
The mount is designed to be used with the UTG RDM20 red dot sight, which uses the Docter footprint. Compatibility with other Docter-pattern sights is theoretically possible. However, given the fitment issues, trying to use other sights seems unwise.
There are no other customization options for the mount itself. Its primary purpose is simply to provide a platform for the red dot sight. Any discussion of further accessories is pointless without proper installation.
Pros and Cons of Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail
Pros
- Potentially slim and low-profile design.
- Affordable price point.
- Lightweight aluminum construction.
Cons
- Severe fitment issues; does not fit specified SIG P-Series pistols without modification.
- Risk of damaging firearm during installation attempts.
- Questionable manufacturing quality.
Who Should Buy Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail?
This product might be suitable for someone extremely comfortable with gunsmithing and willing to heavily modify the mount. Individuals with access to precision machining tools might be able to make it work. However, for the average user seeking a simple drop-in solution, this product is not recommended.
Anyone looking for a hassle-free red dot mounting solution should avoid this product. Anyone unwilling to risk damaging their firearm should also avoid this product. A gunsmith would likely need to be involved.
Conclusion on Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail
The Leapers UTG Super Slim RDM20 Mount – SIG P-Series Rear Sight Dovetail is a disappointing product that fails to deliver on its core promise. The severe fitment issues make it unusable for most SIG P-Series pistols without significant modification. The price point might be attractive.
The value proposition is essentially non-existent. The product does not function as advertised. I would not personally recommend this product.
I strongly advise against purchasing this mount. Invest in a higher-quality alternative or consider having your slide professionally milled. Your firearm and your peace of mind will thank you.