Optic Adapter Plate - Shield RMSc to Trijicon RMR - Sig P365XL Only

Was: $50.00
Now: $40.00
(6 reviews) Write a Review

For years, serious shooters have desired to mount Trijicon RMRs to slides with narrow profiles such as the Glock 43, Sig P365 and the Smith and Wesson Shield. We now have a practical answer.

Our RMS to RMR adapter plate mounts directly to the Shield RMS/RMSc optic cut footprint (machined into the slide) and allows the user to mount a Trijicon RMR securely to the adapter plate!


NOTE: This plate is compatible with the Sig P365XL ONLY. If we machined your P365 slide please choose our P365 plate.

Each plate will ship with one set of M3x.5x8mm screws to secure the plate to the P365XL slide, and one set of custom length 6-32 screws. Recommended torque value for all screws is 11in/lbs.



It is solely the responsibly of the customer to ensure the correct fasteners are used and proper safe function of the firearm is maintained. If you have any questions, contact a competent gunsmith for help!



The major advantage of this system is the freedom to choose either to mount the Shield RMS/RMSc series of sights directly to your slide or to choose to mount the battle proven Trijicon RMR!


Our RMS to RMR adapter plate is CNC machined from billet 7075 aluminum alloy (almost twice as strong as the more common and cheaper 6061 Aluminum) and Type 3 Hardcoat anodized black. To minimize unnecessary weight, the plate has had as much material machined away as possible without sacrificing any structural integrity.

6 Reviews Hide Reviews Show Reviews

  • 5
    P365XL Optic Adapter Plate

    Posted by Peter Fiedler on Jan 15th 2020

    I just received my optic adapter plate for my P365XL. I installed it on the pistol last night and attached my Trijicon RMR Type 2 without a single issue. The entire job took me about 10 minutes. The fit and finish on the plate are superior quality, to say the least.
    I highly recommend this solution if you want to attach an RMR or another optic besides the Sig Romeo Zero...that is whenever it actually is delivered to dealers!

  • 5
    adaptor plate

    Posted by Porter on Jan 10th 2020

    Purchased to allow for a holosun/RMR red dot on my P365XL Really like the very low profile of the plate that allows for low mounting. Thanks!!

  • 5
    P365XL Adapter for Trijicon RMR

    Posted by Eric on Jan 4th 2020

    Absolute perfect fit for Trijicon RM06 on the P365XL. Looks amazing.

  • 5
    P365XL Fits perfectly

    Posted by Tony on Oct 26th 2019

    I bought this mount plate to adapt a Holosun 507C ($299) to my P365XL (yes I got tired of waiting for Sig to release the Romeo Zero) and it fits perfectly. Recommended!

  • 5
    Worked like a charm

    Posted by Jeremy on Oct 25th 2019

    Worked perfectly. No fitting or anything needed, just removed the rear plate and sight, and installed this plate. RMR fit right on top. Great work!

  • 4
    Optic Adapter Plate- Shield RMSC to Trijicon

    Posted by Eric Prenzlow on Oct 21st 2019

    Product ordered was shipped, and received. As advertised.