SIG P320
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SIG P320

(37 reviews) Write a Review
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Related Products


Cerakote is for the entire slide. 

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.

Trijicon RMR cut with front posts. You are able to use Trijicon supplied RMR screws. Cut at .125" 

Sig Romeo 1 Pro does not have recoil posts*

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 RMR we will align it at no charge.

Using Ameriglo SG-181 you will have a lower 1/3 co-witness.

A Sig rear dovetail will be milled for the rear iron sight. 

Some of the older model 320's have a deep channel cut underneath/rear section of the slide. We cannot mill these for optics ( see photo ) 


37 Reviews

  • Milling for RMR and Cerakote

    Posted by Garnet on Feb 17th 2020

    This turned out unbelievably well. You can't tell it didn't come from the factory like this. I took it to the range last weekend, and was amazed at how well this has improved my speed shooting. Zero issues with the gun and absolutely would order this again on another pistol.

  • P320 Tacops

    Posted by JAY BEEBOUT on Jan 31st 2020

    Super impressed with the quality of work. My slide looks great and the RMR is perfectly mounted. Will be sending more projects in soon!

  • Sig P320 OPtic Cut

    Posted by Jacob on Jan 21st 2020

    Sent my slide in to be milled for a Holosun HS507C and couldn't be happier with how it turned out. The black nitride finish was perfect and there were no rough spots left on my slide from machining. They even installed my suppressor sights for me. Overall great experience and very happy with the results. I would highly recommend Jagerwerks.

  • Custom 320 Work

    Posted by John Woods on Jan 13th 2020

    Sent off my xcompact with a comp to get some work done with these guys. Incredible work. Asked for a specific battleworn finish, unsure how it would turn out, and they rocked it. Everything looks incredible, but that's no surprise. Work is too notch.

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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.