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Elevate your Holosun 510C to a perfect Lower 1/3 Co-witness, ideal for pairing with a 3x magnifier. This precision optic riser ensures optimal sight alignment for enhanced accuracy. Crafted from durable aircraft-grade 6061-T6 aluminum with an anodic hard oxidation finish, it offers superior scratch resistance. Installation is quick and easy with the included mounting torx screws and wrench.











sergio –
Exelente
Exelente
Kelly B. –
Improper screws provided.
Since Holosun’s spacer plate is on forever backorder. I figured I’d entertain this to, if anything, atleast be able to do fitment testing and see how it helped. But was unable to properly use it as intended due to the accompanying screws not being the proper length. The plate seemed to be of decent material but if you are unable to properly mount it, then that doesn’t matter.
Tom –
The spacer is OK, the supplied screws are bad
First off, I got this adapter through my own mistake because I actually wanted the spacer for Holosun 507K sight (my bad). So I was going to test it on a different firearm for which I had a 510C adapter plate. And here is the rub (it was not the first time) – the screws that were included in the package simply did not fit the holes, they were the wrong size. This stopped me in my attempt to test it. To be fair, the spacer itself seems to be of decent quality. Why the screws were the wrong size only speaks of the quality control (or a lack thereof) at the manufacturing facility.