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  • Minimizes downrange reflection.
  • Snaps securely in place.

The HexCap is a ruggedly simple, snap-fit Anti-Reflection Device (ARD) that installs securely in seconds to your red dot sight with no additional hardware. 

We designed the HexCap to be as low profile as possible while maintaining durability for use in the field. Its hexagonal lattice allows you to see through the optic with minimal obstruction while eliminating downrange reflections. 

Anti-Reflection Devices are nothing new, but there simply aren't good options for many of the red dots on the market today – especially with the rise in popularity of top-mounted and offset red dot sights. Our goal with HexCap is to solve that problem.

Coming Soon:

  • Trijicon MRO
  • Aimpoint Acro P-2

NOTE: All current Holosun 503C inventory is mislabeled "403C: on the HexCap and packaging. We are aware of the issue and are offering them at a 15% discount (automatically applied) until the errant intory is sold out.

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Each HexCap is made for a specific red dot to ensure perfect fitment.

Want a HexCap for a red dot that we don't currently offer? Fill out this form and let us know! We'll work to make them for the most commonly requested red dots.

Self Sizing

Because so many customers asked, we are providing dimensions so you can measure your red dot and see if an existing HexCap MIGHT fit it. At this time, we cannot issue refunds or returns for HexCaps ordered for an optic that it is not specifically made for.

If you do find a successful fit, please share it with us so we can add it to our cross compatibility charts. Else, we are actively developing HexCaps for the most popular optics based on YOUR responses on our HexCap Request Form. So please fill that out so we can know what you want to see next!

HOW TO: Measure the outside diameter of your red dot's front bezel/objective with calipers. If it is equal to the diameter listed below or less by no more than 0.5mm, it MAY fit your red dot with a cylindrical objective. It is important to have full engagement around the objective, for this reason no current models are compatible with the Romeo 5 series which has varying seating depth around the circumference.

  • Aimpoint T1/T2 - 28.05mm ø
  • Holosun 403R - 29.60mm ø
  • Holosun 403B - 28.00mm ø
  • Holosun 503C - 28.7mm ø


Just the HexCap! It's a snap-fit design, meaning there's no extra hardware needed!


The HexCap is a one-piece design made of a durable Nylon polymer with an integral hexagonal lattice to maximize your available viewing area.


Each HexCap is made specifically for an optic to ensure optimal fitment. However, some existing HexCaps may be compatible on other red dots. We are collecting data on that and will be publishing it here soon.

Red Dots that will accept the T1/T2 HexCap:

Vortex Crossfire RDS, Holosun 403C

Introducing HexCap

Eliminates Reflection

The HexCap completely eliminates any reflection at 33° from the viewing axis and significantly reduces reflections to viewers directly in front of the optic due to its shading affect and light-absorbing surfaces.

Low Profile

We designed the HexCap to be as low profile as possible while maintaining durability for use in the field. This means maximizing your field of view and minimizing snag points while playing nicely with other optics you want to mount it on or near.