SIG SAUER P250/P320 Grip Assembly 9mm/.40/.357 Full Size - Modular Design

The SIG SAUER P250/P320 grip assembly in full-size configuration is the heart of what makes these pistols truly modular. If you own a P250 or P320 and want to swap calibers or just refresh your ergonomics, this genuine SIG polymer grip is the foundation you need. The modular design lets you reconfigure your pistol by pairing this grip with different slides and barrels—giving you flexibility that few production pistols offer out of the box.

Chambered for 9mm, .40 S&W, or .357 SIG, this grip assembly accepts the corresponding slide and barrel combinations to let you build the exact gun your mission demands. Whether you're transitioning between calibers for training, competition, or duty use, the modular system keeps your core platform consistent while changing performance characteristics. The grip itself features genuine SIG polymer construction with aggressive texturing that holds up under serious use and won't slip when your hands are wet or gloved.

Installation is straightforward—no gunsmith required. Just remember that you'll need a compatible firing control unit along with your chosen slide and barrel pairing. If you're already in the P250/P320 ecosystem and want to expand capability or upgrade your ergonomics, this full-size grip assembly is a smart, practical choice that honors what makes these platforms special.

Key Features

• Full-size SIG polymer grip with textured surface for positive control
• Genuine SIG SAUER component—authentic fit and finish
• Modular design: pairs with 9mm, .40 S&W, or .357 SIG slides and barrels
• Easy installation without special tools
• Compatible with P250 and P320 platform pistols

Specifications

Frequently Asked Questions

Will this grip work with both my P250 and P320?

Yes, this grip assembly is designed to fit both P250 and P320 pistols in full-size configuration. It's one of the advantages of the modular platform.

What do I need to use this grip with different calibers?

To switch calibers, you'll need the appropriate firing control unit for your new caliber, plus the matching slide and barrel assembly. This grip assembly alone handles 9mm, .40 S&W, and .357 SIG platforms depending on which slide/barrel combination you pair it with.

Can I install this myself?

Yes. Installation is straightforward and does not require a gunsmith or special tools. The modular design is specifically engineered for field or home maintenance.