Description
Red dots are great right up until the sun catches the lens and lights up your position with a mirror flash. The OHC HexCap solves that with a honeycomb lattice that breaks up reflections off the front glass, so your optic stays dark to anyone downrange. It's One Hundred Concepts' own design, machined out of a tough nylon polymer and built to live on a working gun rather than sit in a drawer. The hex pattern is kept thin on purpose, so you still get a clean view through the dot without feeling like you're looking through a screen door.
How the HexCap 507C Fits Your Holosun
This one is cut specifically for the Holosun 507C and 407C family. It's a snap-fit install with no tools and no extra hardware. You press it onto the optic from the front until the locking tabs seat with a positive click, and it stays put through recoil, bag drags, and daily carry. Because it's purpose-fit to this model rather than a one-size clamp, there's no slop or wiggle once it's home. Worth noting that these fit the newer Holosun bodies with the bottom-mounted brightness buttons, so give your optic a quick look before ordering.
Why the HexCap Earns Its Spot
Beyond killing glare, this cap does double duty as lens armor. It takes the scratches, dirt, and knocks that would otherwise land on your glass, which matters whether the optic rides on a carbine, a pistol, or a top-mount setup. Being a one-piece polymer part, it's lighter and lower profile than bulky flip covers or metal killflashes, and it won't scratch the optic housing on the way on or off.
Feedback on these runs strong across the board. Users consistently call out the tight, rattle-free fit and the fact that it blocks reflection without hurting target acquisition, with plenty mentioning they run one on every pistol and rifle they own. It's a simple piece of kit that does exactly what an ARD should.
Key Specifications
- Manufacturer: One Hundred Concepts
- Model: HexCap
- Manufacturer Part Number: OHC-HC-507C
- UPC: 3511144142077
- Fit: Holosun 507C / 407C
- Product Type: Anti-Reflection Device (ARD) / Killflash Cover
- Mounting: Snap-Fit, No Tools Required
- Material: Durable Nylon Polymer
- Finish: Matte
- Color: Black
- Shipping Weight: 0.022 lb
What’s Included
- One Hundred Concepts HexCap 507C anti-reflection device
Frequently Asked Questions
Which optics does the HexCap 507C fit?
This HexCap is cut specifically for the Holosun 507C and 407C red dot sights. It's purpose-fit to that body shape rather than a universal clamp, which is what gives it the tight, rattle-free hold. Keep in mind it's designed for the newer models with the brightness buttons on the bottom, so double check your optic before ordering.
Does the HexCap block your view or slow down target acquisition?
The honeycomb lattice is kept thin on purpose so you still get a clear sight picture through the dot. When your focus is on the target, the hex pattern mostly disappears and doesn't drag down your acquisition speed. It cuts the glare off the front lens without turning your window into a screen door.
How does the HexCap install on a Holosun 507C?
It's a tool-free snap-fit. You press the cap onto the optic from the front until the locking tabs seat with a positive click, and that's it, no extra hardware needed. Once it's on, it stays put through recoil and daily use.
What is the HexCap 507C made of?
It's a one-piece design machined from a tough nylon polymer, which keeps it light and low profile compared to bulky flip covers or metal killflashes. The material also means it won't scratch your optic housing when you put it on or take it off. It's built to hold up to real field use while protecting your glass from dirt and debris.




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