SIG P320
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SIG P320

(23 reviews) Write a Review
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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 ) 


23 Reviews

  • Sig 320 Compact Slide

    Posted by Texas Ranger on Sep 30th 2019

    Sent this in for milling, cerakoting, and mounting new iron sights and the Trijicon RMR. From the day I dropped it in the mail until I got it back was 10 days exactly, and it was perfect! Great work and fast, too

  • Exceeded my Expectations

    Posted by David H on Aug 20th 2019

    There’s a reason Jagerwerks is one of the most recommended shops for slide milling. I sent in my P320 compact slide for a SRO cut, too window cutout, and nitride refinishing. I opted not to send in my SRO because USPS has given me so many headaches over the years I didn’t want to risk losing it, as their insurance claim policy is a joke.

    Back on topic, the turnaround time was much faster than anticipated and the finish looks amazing. The SRO fits nice and tight. Most shops require the optic in hand to guarantee a perfect fit but these guys have it nailed down. The locating lugs are a nice touch as some other shops don’t include them.

    Also a plus is the part of the slide that Sig milled for the voluntary recall is now protected instead of bare metal how they return it to you.

    My only slight gripe is I would like the pocket to have been milled a tad bit deeper, but that may not be possible so I will give them the benefit of the doubt. As is the Ameriglo SG-181 suppressor height sights don’t quite co-witness though the SRO, but that’s because the SRO’s window sits a little higher than the RMR. They are still usable and since I went with Trijicon I don’t foresee any issues as my pistol is not being used for duty, and I don’t plan on dropping it on concrete optic first. I can always go to an RMR in the future if needed.

  • Slide work

    Posted by Nathan Haynes on Aug 14th 2019

    Sent in my slide to jagerwerks and the work they did was outstanding. Had the SRO cut, top window cut and slide serrations. Sent my suppressor height sights and SRO in with the slide and they aligned everything to perfection. Can’t say good enough things about their work

  • SIG P320 507c cut

    Posted by Les James on Aug 5th 2019

    The work done on my slide is out standing, the fit and finish is a work of art. I will send more work to this company. They are fantastic, kept me updated throughout the process.

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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.