Optic Adapter Plate - Sig P365X/XL/XMacro to Trijicon RMR/Holosun "C" Series

(33 reviews) Write a Review


This plate is compatible with the Sig P365X, Sig P365XL and Sig P365 XMacro slides only.

Each plate will ship with one set of M3x.5x8mm screws to secure the plate to the slide. 

Plates ordered to mount the Trijicon RMR/SRO will ship with the correct mounting hardware to mount Trijicon optics.

Plates ordered to mount Holosun "C" series optics (407c/507c/508t) will use the longer factory 6-32 screws provided by Holosun in the box with the optic. We do not provide the screws for mounting Holosun optics with this plate.

 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!


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

33 Reviews

  • 5
    Does the job

    Posted by Rodrigo on Aug 20th 2022

    Got this to put a 507C on my P365 since they don't make a 507K with the Vulcan ACSS reticle. Works great and is still comfortable to carry. I just wish the mounting screws it came with were black instead of stainless so they would match the sight better.

  • 5
    Works on P322

    Posted by Jimbo on Jun 12th 2022

    Worked great in my P322!

  • 5
    Excellent Product

    Posted by Tony B on Apr 24th 2022

    Installing this on my P365X was very simple, and a great fit for my Holosun HE507C-GR X2. This is very well made, and I would highly recommend it.

  • 5
    Great Product!!

    Posted by Jon J. on Feb 17th 2022

    I very rarely write reviews but this thing is so nice that I had to. I mounted it on my 365X and the fit and finish is amazing. For anyone thinking a full size RMR on a compact gun won’t be comfortable for EDC appendix carry, I was pleasantly surprised to find that I don’t even notice it. The 365X with the Maple Leaf plate and full size RMR is a more comfortable appendix carry than my previous EDC, a M&P Shield with no dot. For reference, I am 5-10, 185 average build.

    I like that I can now carry the same dot on and off duty. A few partners have shot the gun over the past couple days and all are equally impressed with the quality of the Maple Leaf Adapter Plate. Great product at a great price.

    Thanks Maple Leaf!

  • 5
    Optic Adapter Plate

    Posted by Michael Carter on Aug 8th 2021

    Fantastic product and I sincerely hope they make these readily available again. Fit is tight and secure and the cleanest option out there for an RMR on the P365XL. Customer service was also amazing. I'm looking for reasons to spend more money with Maple Leaf Firearms.

  • 5
    Optic Adapter Plate

    Posted by Jim Thornton on Feb 8th 2021

    extremely well made. Fits so well it feels like part of the gun !

  • 5
    Excellent FIt

    Posted by Aaron on Jan 23rd 2021

    High quality, easy 2 min install, nothing left to be desired. Thanks for the solution.

  • 4
    Adapter plate for sig p365xl to rmr

    Posted by G-rat on Jan 14th 2021

    Works well, does what its supposed to and looks well made too.

  • 5

    Posted by Zach on Nov 12th 2020

    Super quick @ easy install, just pop the slide off, take the back sight screws out and pop the plate on. Easy. Perfect fit