Sig P365 Optic Cut - Holosun 407k/507k

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Add a Holosun 507k Optic Cut as a standalone upgrade to your Sig P365 slide.

This Optic Cut allows you to mount a 507k sight directly to your P365 slide with two included #6-32 screws.

The cut features a precision CNC machined pocket directly in front of the Sig factory rear sight dovetail. By design, the 507k will fit tight within this pocket, preventing the sight from moving in any direction, ensuring your optic remains zeroed in even under the harshest conditions.

This product includes the Optic Cut only.

*Optic not included.



49 Reviews Hide Reviews Show Reviews

  • 5
    P365 Holosun 507K Optics Cut

    Posted by Mark Schumacher on Aug 8th 2021

    I sent mu third P365 slide in for the Holosun 507K optics cut. Once again I received it back quickly, 16 days and the work was great. The fit is extremely tight and the works looks great. Maple Leaf is a great business to work with, thanks.

  • 5
    Holosun 507 Optics Cut on Sig P365

    Posted by Mark Schumacher on Jul 25th 2021

    This is the second slide that I sent for the same work, it's a friends and I loaned him the upper from my spare 365 so he could carry while it was being machined. As with the first, it's a great job, extremely tight fit so the optic won't move, great machining skills and no damage or nicks to the rest of the slide. Turn around time was even better this time, from Illinois to Texas and back in 18 days. Can't say enough about the great workmanship and customer service from Maple Leaf Firearms.

  • 5
    365 Optic Milling

    Posted by Ken O. on Jul 17th 2021

    Sent in my NRA Edition P365 for Optic cut and Holosun 507K. Got it back in 2 weeks....optic mounted and ready to go. What a awesome job. As good or better than Sig could have done at the factory. Very pleased with the service and craftsmanship. Pricing is great! I would look no further than Mapleleaf....have no doubts about doing it. Love It !!!!

  • 5
    SIG P365 OPTIC CUT - HOLOSUN 407K/507K

    Posted by Danny on Jul 6th 2021

    After doing tons of research and web searches, I kept coming back to Maple Leaf Firearms. I am so glad I did, the cut for the Holosun 507k optic fit like a glove! Highly recommend them!!

  • 5
    Holosun 507k Optic Cut and Installation

    Posted by EJB on Jul 6th 2021

    Maple Leaf did an outstanding job with the Optic Cut, Nitride refinishing and installation of a 507k Red Dot on my P365. Sending off a slide and entrusting someone with making irreversible changes like an optic cut is definitely a bit of a risky venture. But Maple Leaf handled it superbly! I could not be more pleased with the fit and finish, and the turnaround time was fantastic. I went out to the range this past weekend and the performance of the new site was exceptional! I highly recommend Maple Leaf. You won't be disappointed!

  • 5
    Optic cut

    Posted by Scott on Jul 5th 2021

    Had my sig p365 cut for the holosun 507k they did an awesome job highly recommend

  • 5
    P365 cut for Holosun 507K

    Posted by bokorugro on Jun 30th 2021

    Did some research on various Sig forums and Maple Leaf was highly regarded so decided to send my P365 slide in to them to get done. I was not disappointed. Slide came back and looked and fit like it was factory done. 507K fit perfectly. The little tin with the business card, sticker and mounting screws was a nice touch. Great prices and the MIL discount is much appreciated. Went to the range and fired various weight rounds and no movement on the 507K whatsoever. Will definitely be sending another slide soon. Glad to see the option for insurance on the return trip. All the carriers have issues so it is nice to know you are protected. Got the slide back quicker than quoted and it was done here in the great state of Texas. Lots of great options to choose from. Tango Mike Maple Leaf.

  • 5
    Optics cut

    Posted by Mark Schumacher on Jun 29th 2021

    Sent my Sig 365 slide in 19 days ago fora slide cut so I could mount the Holosun 507K, it returned today. The work is excellent and the Holosun fits very tightly, it's not going to shift with recoil. I think the work, turn around and pricing fro Maple Leaf Firearms is top notch. Loaning my second 365 upper to a buddy so he can send his in for the same work and when it's back I'm sending the slide in for the same work. After 30 years in LE I always have a spare carry gun. With my eyes not seeing the sights like they use to the optics are the way to go. Thanks for the great work and service.

  • 5
    I highly recommend

    Posted by Ralli on Jun 22nd 2021

    The Holosun 507k cut is amazing!! The RDS fit perfectly in and I highly recommend that anyone who is looking to do an optic cut get it done here!