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Patriot Defense | Grand Power Slide Optic Milling

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Patriot Defense | Grand Power X-CALIBUR Slide Optic Milling

Patriot Defense | Grand Power X-CALIBUR Slide Optic Milling


  • This is a milling service only.
  • Please Note- Patriot Defense has no control over the quality standard of optic manufacturers and their elevation adjustments. There for Patriot Defense is not liable if your particular carry optic setup requires a shim in order to achieve a zero. This is not an uncommon occurrence across many different platforms and many factors play into this including bullet power factor, zero distances, optic, and elevation adjustment. If you are not willing to possibly use a shim in order to achieve a zero we highly recommend you go with a rear sight mount for your optic. We do guarantee a precision CNC fit with your optic of choice and your slide. By purchasing this product you agree that you fully understand the above. Please read the below in its entirety…
  • We will not be able to guarantee a precision fit if you fail to send your optic with the slide. Every Slide is test fit with a "shop" optic that we have on hand. However, there are manufacturing tolerances that may cause your RDS not to fit correctly. You will be responsible for shipping of the slide back to us if your application needs further machining. 


*** PLEASE READ***- Patriot Defense tries to utilize the best optic cut/screw combination that will work with the particular slide. We do not manufacturer the screws and we do not have the ability to utilize the factory over sized screws that normally come with the optic. We normally run into issues with the screws punching into the FPB hole, the side of slide, or the firing pin channel. We understand a lot of our customers shoot competitively and put their firearms through the ringer. With that said we recommend changing these screws out every few thousand rounds to maintain reliability and strength. By purchasing this service you understand that Patriot Defense does not manufacturer the optic screws and we are not liable for the repair or replacement of broken, over tightened, or sheared screws. 


*** PLEASE READ***- Please select armorer fee if you plan on sending in your slide with the rear sight installed. Many rear sights have stripped out allen heads that need to be drilled out before removing, the Armorer fee service covers this. We are not responsible if the rear sight incurs damage during removal as well. 



3352 CR-212

Anderson, TX 77830

(We recommend you insure  your package.)

 Milling Instructions

4 Reviews Hide Reviews Show Reviews

  • 5
    Grand Power Slide optic Milling

    Posted by LD on Mar 24th 2023

    Patriot Defense did a great job milling my Grand Power P11 for a 407k. It is soo much better to shoot my GP P11 with a red dot optic. Patriot Defense had a really quick turn time. Once the slide was in their hands, the work was completed and received back in my hands exactly 2 weeks later.

  • 5
    X-Trim Slide

    Posted by Marciel on Oct 25th 2022

    Got my X-Trim slide milled to perfection with these guys! From the day I sent it to them and got it back only took less than 2 weeks and I’m in Hawaii! Great job guys!

  • 5
    Red Dot Scope mount

    Posted by Jerry on Dec 16th 2021

    The folks at Patriot Defense came through for me. I bought this pistol, not giving a second thought as to mounting a scope to it. I love the pistol, but hated that I couldn't attach a red dot. A scan of online forums showed that Patriot Defense was the only path forward. They came in big time for me. The milling quality is superb. I highly recommend them for this task.

  • 5

    Posted by Patrick on Jan 6th 2021

    The Patriot Defense team did an unbelievably good job milling my X-Calibur slide. I couldn't be happier. Precisely done and professional. It's rock solid on the slide.