SIG Sauer P320 Upgrades

Are you interested in upgrading your SIG Sauer® P320, M17 or M18? Grayguns is the industry leader and subject matter expert on the platform. Our trigger components are designed to improve the action's feel while reducing trigger pull weight.

We have premium upgrades available for all versions of the P320, including the P320 X-TEN and manual safety models. Product descriptions include Fit Guides to help you determine whether the item fits your P320 variation.

All Grayguns trigger component upgrades are designed to maintain the manufacturer's safety values.

This page includes more than 60 SIG P320 products.

Quick Links

Triggers & Trigger Kits | Firearm Builds | Grips & Grip Modules | Custom Slides | Base Pads & Magwells | Guide Rods | Barrels | Magazines | Sights | Magazine Releases | Accessories

P320 Trigger Upgrades & Competition Kits

Verified Review
"Ordered this kit and received it within 3 days. Everything was well labeled and matched the description, which made installation easier. The performance of this kit in my P320 is outstanding. I’ve never been a fan of Sig triggers. Spongy, no wall, lazy reset… after installing the Gray Guns kit, my Sig has a trigger rivaling any striker-fired pistol out there —and better than most. Much better crisp pull and quicker, shorter reset. Changed the way I feel about the gun. It's better than the S&W Performance Center triggers. Thanks, Gray Guns!"

Grayguns P320 Firearm Custom Builds

P320 Grips and Grip Modules

P320 Custom Slides

P320 Base Pads & Magwells

P320 Guide Rods

P320 Barrel Upgrades

P320 Magazines

P320 Iron Sights

Along with the Iron Sights listed below, Grayguns offers a selection of optics from SIG Electro Optics and Trijicon for your SIG P320.

P320 Magazine Releases

SIG Sauer P320 Tools, Springs & Accessories