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Sig P365 Holosun K Series

(27 reviews) Write a Review
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If holster wear/durability is a concern then we highly recommend going with our Black Nitride as Cerakote is a wearable item. 

Cerakote and Black Nitride are 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.

Screws supplied are (2) #6-32 IP15. Both are safe to use on the extractor side of the slide. An IP15 is needed 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 K series, barrel and recoil spring we will align it for free

Holosun K Series / EPS / EPS Carry - #6-32 x 7/16" IP15


Note* Please be careful when installing screws with the new EPS, tolerances can be slightly different and the screw caps come close to the glass.  If JagerWerks does not do the installation we cannot guarantee fitment.



Iron Sights:
 is a great option for a lower 1/3rd co-witness. If you include these with your slide we will install them for free. 


27 Reviews

  • Sig P365 Holosun K Series

    Posted by Shane Richardson on Feb 28th 2024

    As always, the absolutely unmatched quality of machining, finishing and assembly/prep for shipping, makes the lead time well worth the wait!

  • Milled slide for Holosun K series

    Posted by Robert on Jun 21st 2023

    Fine job, the finish is fantastic

  • Milled slide of p365 for Holoson 407k

    Posted by Dan on Apr 5th 2023

    I'm within driving distance to this of Jager Werks and chose to take my p365 there personally. Upon arrival I was greated by one of the workers. He was very pleasant and answered all of my questions. I then talked Zak. Another pleasant guy to talk to. I then asked him a ton of questions. He took my order and that he'd call me when my slide cut and nitride was done. Weeks seem to drag by when you are waiting for something. Three weeks to the day Zak called me and told me that my order was back. I drove to Kalamazoo and picked it up that afternoon. Zak and the guy I first met and also the guy who cut my slide greated me when I arrived. I felt like I was the most important person in the shop. These guys are the best. My red dot was mounted on the slide and co-witnessed with my iron sights. Needless to say I am a vary happy camper! The red dot and slide looks like it was factory done. Actually, better than factory, because these guys talked to me and with me like they new me for years. They are GREAT! And it shows in their attitude and craftsmanship. Thanks Zak and crew.

  • Slide Milling and installing Holosun 507K on P365

    Posted by Brad Ziegler on Mar 23rd 2023

    Very satisfied with my dealing with JagerWerks. All aspects of order process was first class, excellent communication throughout the process. Machine work and installation of my Holosun 507c is flawless. This looks like it was done at the Sig factory. Gun shoots dead on at 10 yrds. With the addition of this red dot I am now hitting 8 inch steel plates at my gun club at 25 yards with ease. ( That's a big improvement for me considering my tired old eyes with mild cataracts ) Thank you for a job well done, I would highly recommend 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.