The Co-witness Ready Optic Mount (CROM) is a direct mount for attaching an RMR or Aimpoint Micro (H1, T1, H2, T2) to your Beretta 1301 Tactical Shotgun, Remington, or Mossberg shotgun. The CROM replaces the factory plastic rail and rear sight and directly mounts the optic to the shotgun’s receiver. This allows the optic to sit much lower, providing a consistent and proper cheek weld. The CROM utilizes an XS rear ghost ring that is adjustable for both windage and elevation. This gives you the ability to co-witness the rear ghost ring and the factory front sight, allowing an emergency backup sighting system in case of optic failure. Made in the U.S.A Covers must be removed to work with the H2/T2.
Rob Haught Mod: Inspired by the preferred Ghost Ring setup of legendary shotgun instructor Rob Haught, this modified aperture allows for quicker sighting and a cleaner sight picture when using a red dot optic with the CROM. 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.
Notes: 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, we cannot necessarily guarantee a perfect co-witness. However, all testing has shown excellent usability with a variety of loads and guns.
If your Remington shotgun is not drilled and tapped using the Remington pattern, consult a qualified gunsmith.
Covers must be removed to work with the H2/T2.
Joshua Hubbard (verified owner) –
Great solid mount for mounting a red dot to a shotgun (I mounted a Holosun 508t on a Mossberg 590a1) and still having co-witnessed iron sights. BTO is fantastic to do business with and always has competitive prices, fast low cost shipping and great service.
fyasko51 (verified owner) –
Fit and finish are exceptional, got a 508T mounted, and it is rock solid! Great product
Brian Shelton (verified owner) –
This is THE way to mount ghost rings and an optic on your shotgun. This is the 2nd one I have purchased and it won’t be the last.
Great experience with Big Tex Ordnance also.
artcheng92 (verified owner) –
Quick and easy install and works with my 507C
doi750 (verified owner) –
Fit and finish is perfect and the 507C I mounted to it fit perfectly as well. No complaints, and would recommend.