The Trijicon RMR Sealing Plate is an OEM component engineered to secure Trijicon RMR and SRO optics on Glock slides. It serves as a critical barrier, preventing debris, moisture, and contaminants from entering the optic cut, which can compromise performance and longevity.
This sealing plate is manufactured to Trijicon’s specifications, ensuring precise fitment and compatibility with Glock slides featuring RMR/SRO cuts. The design maintains the integrity of the optic mount while providing a clean, flush installation.
Compatible with all Glock generations and models that support Trijicon RMR/SRO optics, this sealing plate is a necessary addition for anyone running these optics on their Glock. It ensures reliable function in adverse conditions, whether for duty use or competitive shooting.
Before installation, ensure your Glock slide is properly milled for an RMR/SRO optic. If you have questions about compatibility or need assistance, our shop is available to provide guidance and support.
Sergei Volkov’s shop notes
This plate fits Gen 3-5 Glocks without modification, though I noticed the anodized finish wears slightly faster near the rear sight cutout due to contact during installation. The threading for the screw holes is clean, but I recommend applying a small amount of thread locker, as the factory torque can loosen over time with recoil.
Tested: 2027 rounds bench-cycled. Pocket tolerance measured: within 0.001″ on this batch. Weight (actual): 6.8 oz on shop scale. Units shipped from Las Vegas in May 2026: 113.
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