Description
The Trijicon RMR Sealing Plate from C&H Precision is a purpose-built accessory for shooters who run their RMR-mounted pistols in demanding, wet, or submerged environments. Without a sealing plate, the gap between the optic’s base and the pistol mount is an open path for water intrusion. This plate closes that gap, allowing the RMR to be submerged to 66 feet for up to one hour without water reaching the optic’s internals — a meaningful upgrade for duty, maritime, or any wet-weather use where optic reliability is non-negotiable.
Compatibility covers all Trijicon-manufactured RMR pistol mounts, so there is no need to verify fitment across different RMR generations or host platforms — if Trijicon made the mount, this plate is designed to work with it. Construction is stainless steel, which resists corrosion in salt water and humid conditions where other metals would be a liability. The plate is made in the USA at C&H Precision’s facility in coastal Georgia, machined on HAAS CNC equipment and inspected before shipping. Professional installation is recommended to ensure the seal seats correctly; an improperly installed plate defeats the entire purpose of the accessory.
At its price point, this is a low-cost way to address a real vulnerability in an otherwise capable optic system. If you are already running a Trijicon RMR on a pistol mount and operating anywhere near water, the sealing plate is a straightforward addition that requires no modification to the optic or mount itself.




