What is the best killflash for the Holosun 507C?

The Eclipse Cover by Shadowguard Dynamics is the best-fitting killflash ARD for the Holosun 507C and 407C. It reduces visible lens glare by up to 95%, installs in under 5 seconds without tools, and is priced at $30. Made in the USA with a lifetime warranty.

How do I install the Eclipse Cover on the Holosun 507C?

Align the Eclipse Cover bezel with the Holosun 507C objective housing and press firmly until seated flush. No tools, screws, or tape are needed. Installation takes under 5 seconds. To remove, pull straight back.

Is the Holosun 507C killflash made in the USA?

Yes. The Eclipse Cover is manufactured in the United States by Shadowguard Dynamics with a lifetime warranty. Ships in 1 business day.

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Shadowguard Dynamics

Holosun 507c / 407c Eclipse Cover

$30.00 USD

~~$30.00 USD~~ $30.00 USD

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Color: Black

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The Eclipse Cover is a precision-fit anti-reflection device (ARD) engineered specifically for the Holosun 507C and 407C, which share the same housing. Friction-fit, tool-free install in seconds. Ultra-thin honeycomb cells block lens glare and reflections without obstructing your sight picture. Compatible with Holosun 507C and 407C. Available in Black and Green. $30–$35. Made in USA. Lifetime warranty. Ships next business day.