Glock Holoun K Series Cut
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Glock Holosun K Series

(10 reviews) Write a Review
Size Chart

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Cerakote is for the entire slide. (Black Nitride adds 2-3 weeks lead time) 

For Cerakote color codes and examples:

It is implied that the customer will have arrangements for coating of a slide if NONE is selected for color. If NONE is chosen there is potentially an issue for rust and corrosion to develop on the slide. Jagerwerks is not responsible for misuse and neglect of bare metal.

Our Holosun K Series cut is milled to a depth of .125" which includes front recoil posts and mounting screws. 

Screws supplied are (2) #6-32 IP15. Both are safe to use on the extractor side of the slide. An IP15 wrench is included for install.

We do not charge extra for disassembly/reassembly, if you send your entire slide assembly we will laser align the sights for you.

If you include new sights we will install the new ones at no charge. If you include your Holosun, barrel and recoil spring we will align it for free. 

Works on Large, Medium and Small frame Glocks. 

Holosun K Series - #6-32 x 7/16" IP15 screws are included. 

For a lower 1/3rd co-witness you will need the irons listed below. If you include these with your slide we will install them at no extra cost. 

Rear iron sight - .225" / .125" wide

Front iron sight - .220" / .115" wide

Race cut (no rear iron) front sight - .190" / .115" wide

Shield RMS/c will fit this cut as well but  #6-32 x 3/8" IP15 screws are required. You can purchase Shield Screws here

If your iron sights are not compatible with the optic/optic cut we will not reinstall them. They will be sent back in a plastic bag with your slide.

10 Reviews

  • Best item out there

    Posted by Karl T. Stafford on Nov 18th 2020

    Jagerwerks made my day

  • Perfect fit!

    Posted by Casey Boatman on Nov 18th 2020

    My Holosun 507k x2 popped right on! Fits perfectly!

  • Holosun 507k slide milling review

    Posted by Andrew M on Sep 28th 2020

    I was hoping to receive a good product but was absolutely blown away at the quality of the work done. Seriously, the tungsten cerakote on my glock 43X looks incredible and is way better than factory finish. I got my slide milled for the 507k and they installed my red dot and iron sights at no additional cost. Turn around time was about 5 weeks which was perfectly fine with me. All in all I am very pleased with their work and will be returning for all future work. 10 out of 10

  • Holosun 507k slide mill

    Posted by Taylor Martin on Sep 13th 2020

    I just received back my glock 43x slide from Jagerwerks and I am very thrilled with how great a job they did. They milled it for the Holosun 507k and did a black nitride finish. The work they did was amazing AND from the time i mailed my slide to them to the time it got back to me was right at 1 month!! Way ahead of the expected lead time. I will recommend their services to everyone I know. They have a lifelong customer in me now. Thanks Jagerwerks!

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Shipping & Returns


Please ship to our address 

JagerWerks Eng LLC 

111 D ave East 

Kalamazoo MI, 49009 

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

 Shipping Insurance and Signature Confirmation

When shipping slides for milling, SHIP SLIDES ONLY. Do NOT ship the lower of the firearm as we are not transferring the firearm. We only custom mill slides.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.