Holosun 507K +  Milling
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Holosun 507K + Milling

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This product applies to Glock, CZ and Sig slides that we offer on our website. For model options please refer to the site. This package does include the milling of the slide. You will have to mail your slide into us. 


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


For Cerakote color codes and examples: http://jagerwerks.com/cerakote/

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 507K includes front recoil posts and mounting screws. 

Sig P355's cannot have a forward dovetail due to the slope of the slide. Only Race Cut and Behind Optic are an option. 

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 507K, barrel and recoil spring we will align it for free. 

The HS507K is an open reflex optical sight designed for concealed carry pistol applications. Features include Holosun’s Super LED with up to 50k hours battery life, Multi-Reticle System, and Shake Awake.



1 Review

  • Great all-around

    Posted by Rick on Sep 30th 2020

    The optic itself is great and there's much to love about it. I have seen some of the "X" revisions Holosun has done and I prefer the finish on those optics but this optic was purchased before the revisions.

    The bundle is priced fair, and Steve really does a great job in being responsive, kind, and helpful. I had several questions, so I reached out to them, and they always responded within a day. I chose to finish my slide with black nitride and it is amazing. I also received the package way sooner than I expected it, which was a big deal for me because I understand how much work the industry has right now.

    Great product. Great work on my slide. Great customer service from a great company. Whenever I need any more work done, I'll go to Jagerwerks.

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Shipping & Returns


Please ship to our address 

JagerWerks Eng 

2909 Lake St 

Kalamazoo, Mi 49048 

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.