Description
Glare off your optic lens is one of the fastest ways to give away your position, and it is also just plain annoying when the sun catches it wrong. The OHC HexCap solves that for Trijicon RMR owners with a honeycomb lattice that absorbs and shades light before it ever bounces back downrange. It is One Hundred Concepts' own design, built to fit the RMR footprint precisely so you get a clean, locked-in fit instead of a loose aftermarket guess.
What Makes the HexCap Different
Most anti-reflection devices are either bulky flip caps or flimsy imitations. The HexCap is a one-piece unit made from a durable nylon polymer with an integrated hexagonal lattice, so it stays low profile while holding up to field use. That hex pattern is sized to let you see through the optic with minimal obstruction, so you are still running your dot normally while the reflection problem disappears. OHC notes it completely eliminates reflection at 33 degrees off the viewing axis and significantly cuts glare for anyone looking straight into the optic.
Installing the RMR HexCap
There is no hardware and no tools involved. You push the HexCap onto the front of the RMR and it snaps into place once the locking tabs seat. The whole thing takes a few seconds, and because it is a snap-fit polymer piece it won't scratch or mar your optic housing. When it is on, it doubles as a lens cover, keeping scratches, dust, and debris off your glass between range trips or out in the field.
Who Runs a HexCap
This is a favorite among folks who run their RMR hard, from hunters to serious weekend range regulars who want their setup to stay low signature and protected. It is light, it is tough, and it stays put under recoil. If you already run a Trijicon RMR and have been eyeing a kill flash that doesn't look like an afterthought, this one earns its spot on the optic.
Key Specifications
- Manufacturer: One Hundred Concepts
- Model: HexCap
- Manufacturer Part Number: OHC-HC-RMR
- UPC: 3511144132931
- Fits Optic: Trijicon RMR (not Dual Illuminated)
- Product Type: Anti-Reflection Device / Kill Flash Cover
- Material: Durable nylon polymer
- Design: One-piece snap-fit, no hardware required
- Color: Black
- Reflection Control: Eliminates reflection at 33 degrees off viewing axis
What’s Included
- One OHC HexCap RMR anti-reflection device
Frequently Asked Questions
What optic does the HexCap RMR fit?
This HexCap is cut specifically for the Trijicon RMR footprint and is intended for the standard RMR, not the dual illuminated version. Because it is precision-fit to that model, it snaps on snug without any wobble. If you run a different optic, OHC makes HexCap versions sized for other red dots.
Does the HexCap RMR need any tools or hardware to install?
No. It is a snap-fit design that pushes onto the front of the optic and locks in once the tabs seat. The whole install takes a few seconds and there is no hardware, adhesive, or tools involved.
Will the HexCap block my view through the red dot?
The hexagonal lattice is sized to keep obstruction to a minimum, so you can still run your dot and acquire targets normally. It reduces your field of view far less than you might expect while killing the reflections coming back off the lens.
Does the HexCap protect the lens when it is on?
Yes. Along with cutting glare, it acts as a cover that keeps scratches, dirt, and debris off your glass. Since it is a polymer piece, it also won't scratch the optic housing it mounts to.





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