UTG Super Slim RDM20 Dovetail Vortex Venom / Burris Fastfire Red Dot Mount
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UTG Super Slim RDM20 Dovetail Red Dot Mount
Mounting a Micro Red Dot to your Ruger 10/22, Marlin Model 60, and other dovetail rail firearms has never been easier. Compatible with Docter Red Dots like the AT3 ARO, Vortex Venom, and Burris Fast Fire red dots. This mount is easy to install, low profile, and rock-solid, retaining zero after lots of shooting. Additionally, an optional recoil stop pin gives extra rigidity against recoil.
This mount is weather and wear resistant, made from 6061-T6 Aluminum with a matte black anodizing. Minimalist, straight-forward, and ready for your firearm, the Super Slim RDM20 Dovetail Red Dot Mount makes your shots fasters and more accurate.

Features
- Low Profile 0.33″ Saddle Height Keeps Height Overbore to a Minimum
- Precision Machined from 6061-T6 Aluminum and Finished in a Matte Black Anodization
- Compatible with 9mm – 11mm Flat or Round Dovetail Rails
- Compatible with UTG® OP3 Micro Reflex Dot Sights and Most Other MRDS that Use the Docter® Footprint
- Optional Recoil Stop Pin Provides Additional Retention Against Bidirectional Recoil
- Silicone Insert Maintains OP3 Micro IPX7 Waterproof Rating
Installation
Install Docter pattern red dot sights using the two optic screws and choose to use optional recoil stop pin. Compatible on 9mm to 11mm Flat and Round Dovetail Rails found on most .22 rifles and other firearms.
Specifications
- Brand: UTG Leapers
- Model: Super Slim RDM20 Dovetail Red Dot Mount
- Fit: Docter Pattern Red Dot Sights
- Attachment: Flat or Round Dovetail Rails
- Material: Aluminum
- Finish: Black Matte Anodized
- Weight: 0.7 oz
Customer reviews 1
The buck horn sights on my Winchester Ranger are not compatible with 78 year old eyes. I wanted to mount a red dot as low as possible over the dove tail receiver and the RDM20 was the only mount that seemed capable. Arrived very quickly and fit the dove tail perfectly. I installed a Burris Fast Fire 3 and again, fit of sight to mount was perfect. Dot was low over the receiver and a normal cheek weld was possible. Got lucky and the first shot fell within [link removed]" of center. I was concerned that the mount might move as I did not use the optional anchor screw for fear of messing up the receiver. I applied little force when clamping the mount, again to avoid damage and by the end of the initial session, I think the sight did walk back. I re-positioned the sight and this time I clamped it down as tight as possible. The second range session was perfect. The sight did not move after 120 rds and accuracy was more than acceptable for inexpensive .22 ammo. The look isn't classic but it's as close as one can get. Highly recommended.
Bill
Questions & Answers
No questions yet. Ask about fit, install or compatibility and our team answers within a business day.
Warranty & returns
Backed by the UTG Lifetime Warranty!
UTG Lifetime Warranty
Leapers, Inc. warrants that all UTG & UTG PRO products conform to published specifications and are free from defects in material and workmanship. We will repair or replace defective products for the duration of the product’s life span. Our dedicated in-house customer service professionals will provide the best-in-class UTG experience.
Please note that this warranty does not extend to products disassembled, damaged from misuse, accidental impact, negligence, natural disasters/accidents, or unauthorized repair or alteration.
Warranty Instructions
- Go to Warranty Request under Customer Service on our website.
- Fill out the necessary contact and product information to the best of your knowledge.
- A purchase receipt is required for all warranty cases and needs to be attached at the end of the form.
- Finalize the case by submitting the information to us.
- You will hear from one of our customer service reps within 24-48 hours and we will provide you with additional information and instructions.
- No return will be accepted without an RA#.
- For any questions regarding the process, please feel free to call at (734)542-1500.
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.











