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OpticsPlanet Exclusive American Defense Manufacturing Holosun 510C Quick Detach Mount
List: $115.20 $109.44 Save $5.76
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Most Helpful Positive Review Very good but expected better
This mount has more way more robust locking and more surface contact with the rail than the factory mount. The only thing I do not like is that the mount is wider than the red dot main body by about 3mm (0.12") so it overlaps rds body on both sides a bit. It looks a bit ugly, not like a final product but more like a prototype that does not fit perfectly yet. I was planning to get one more for my second 510C as soon as I test the first, but now I hesitate a bit.
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solid mount

by batonrouge, from LA, United States Written on April 26, 2026
I have two of these. - its a sold mount. Very easy to install holosun. I found the optic height to be perfect.
Would recommend: Yes
Was it helpful to you? Yes | No

Works as expected

by Bubaloo, Verified Owner from NJ, United States Written on April 19, 2026
Great upgrade from the QD attachment that ships from Holosun
Would recommend: Yes
Was it helpful to you? Yes | No

Happy Camper

by Camper, Verified Owner from FL, United States Written on August 18, 2024
A solid base that realizes with ease. Tensioner functions just fine and locks up nicely.
Pros:
  • Stated above
  • Stated
Cons:
  • none yet
Would recommend: Yes
Was it helpful to you? Yes | No

High quality and perfect fit

by Sh, from WI, United States Written on April 15, 2021
Super high quality and fits my 510c like a glove. The outer edges of the mount match perfectly with the outer edges of the 510c base. Adjustment of the qd lever is easy and doesn't require tools. Highly recommend.
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No

Great QD mount

by Great QD, from OH, United States Written on April 10, 2021
Excellent craftsmanship and great QD. Lever system that can be easily adjusted using your finger or a flat blade screwdriver. Install this OpticsPlanet Exclusive American Defense Manufacturing Holosun 510C QD Mount to add a high-quality optic to your firearm for range training, hunting or field operations
Would recommend: Yes
0 of 1 found the following review helpful.
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Superb Mount

by LoneWolf76, Verified Owner from MN, United States Written on September 4, 2020
Most importantly, this mount, as a mount, is vastly improved over the holosun QD that's included with the 510c. It has a much larger clamp that you can cinch down tight... unlike the holosun. The return-to-zero is also much improved. The other reviewer who states that the mount isn't cut to match the original is correct. When you have the riser plate installed you see what he means. There is no "cutout" in the ADM mount to match the riser. This I don't care about. What I DO care about is the fact that they DO NOT include screws needed if you have the 1/3 riser plate installed. The hole pattern on the ADM doesn't match the original and you need to have longer screws with the way this is designed. I don't think ADM ever looked at the riser plate.
Pros:
  • solid
  • Precise & Accurate
Cons:
  • No screws included for riser plate setup
Would recommend: Yes
9 of 9 found the following review helpful.
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Light weight and perfect fit

by Big Shooter, from MI, United States Written on April 12, 2019
This mounts up perfectly to the 510C and looks better than the stock QD mount, its lighter weight too. The way the pockets are machined around the screw holes makes it easy to drop the screw in and get it lined up, especially at the front. The price point is higher but if you are looking for an upgrade this is it.
Pros:
  • light weight
  • Perfect Fit
  • well machined
Cons:
  • high price
Would recommend: Yes
3 of 3 found the following review helpful.
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ADM quality.

by nateski, Verified Owner from SC, United States Written on February 27, 2019
I'm not sure if there are variations in Holosun's optics that accounts for the experience the other reviewer had. This fit perfectly for my Holosun HS510C-GR. Solid lockup like all the other ADM products.
Would recommend: Yes
4 of 4 found the following review helpful.
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Last updated 2025-11-12 UTC.