The Co-witness Ready Optic Mount (CROM) is a direct mount for attaching a
Trijicon RMR to your Remington shotgun. Using the existing drilled and
tapped hole pattern found on many factory Remington 870s, 1100s, 11-87s,
and the VersaMax, the mount eliminates the need for a picatinny rail by
directly mounting the optic to the receiver. This allows the optic to
sit much lower, providing a consistent and proper cheek weld.
utilizes an XS rear ghost ring that is adjustable for both windage and
elevation and this gives you the ability to co-witness the rear ghost ring
and an appropriately sized front sight with the red dot, allowing an
emergency backup sighting system in case of optic failure.
from XS, Wilson Combat, Vang Comp, etc that are designed to work with
ghost rings will be compatible with the CROM’s rear aperture. Front
sights with a height over bore (top of the inside of the barrel to the
top of the front sight) ranging from 0.67" to 0.75?"should be able to
achieve a usable co-witness.
This particular model sports the preferred Ghost Ring setup of legendary shotgun instructor Rob Haught. The top half of the XS Sights aperture is milled off, resulting in an open U notch. The aperture is then deburred, sanded, and parkerized. This modified aperture allows for quicker sighting and a cleaner sight picture when using a red dot optic with the CROM.
If your Remington shotgun is not drilled
and tapped using the Remington pattern, consult a qualified gunsmith.
Note: The zero of a shotgun is very dependent
on the specific barrel and ammunition used. While the XS rear sight
allows for a wide range of adjustment, it is possible you may need a
taller or shorter front sight depending on where your specific gun and
ammo hits. We cannot guarantee that every shooter will be able to
achieve a perfect co-witness with their exact setup, we can only offer
guidlines based on what we have seen in testing.