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Need to get your HOLOSUN 510C to the perfect height for co-witnessing with your iron sights?

This official HOLOSUN spacer (model 510CSPACER) raises the optic to a lower 1/3 co-witness height.

It's machined from durable aluminum, finished in black, and weighs almost nothing (0.04 kg).

Installation is simple—just mount it between your optic and the firearm.
Perfect for ARs and other platforms where you want a clean sight picture with backup irons visible in the lower third of the window.

Designed for the 510C reflex sight.

Made from materials sourced from China, designed by HOLOSUN.

Hunting and shooting ready.

4 out of 5