Sig Sauer P320 Full-Size Coyote Grip Module, Medium, 9mm/.40 S&W/.357 Sig

The Sig Sauer P320 Full-Size Coyote Grip Module in medium size lets you reconfigure your modular P320 platform to run 9mm, .40 S&W, or .357 Sig—without buying an entirely new pistol. If you already own a P320 firing control unit (the regulated part that defines your gun legally), this grip module is your ticket to caliber flexibility. Swap your existing FCU into this coyote-tan polymer frame, pair it with the appropriate slide and barrel for your caliber of choice, and you've got a fresh setup tailored to your needs, whether that's competition, duty, or sport shooting.

The medium grip size strikes a balance for shooters who find the full-size frame the right length and sight radius but want a frame that doesn't feel oversized in the hand. The standard polymer construction keeps weight minimal—just 3.7 ounces for the grip module alone—so your P320 stays pointable and quick to target. The reversible magazine release accommodates both left- and right-hand shooters without permanent modification. Coyote tan blends into natural and urban environments alike, and the standard grip texture provides reliable purchase in dry or moist conditions.

Note that this grip module ships without the extended magwell or internal weight system; those are sold separately if you want them. You'll need to source a compatible P320 full-size slide and barrel in your chosen caliber, plus magazines for that round. The modular design is one of the P320's defining strengths—this frame is the foundation that lets you build the gun you actually want to shoot.

Key Features

• Full-size grip frame in coyote tan, designed for P320 FCU platforms
• Accepts 9mm, .40 S&W, or .357 Sig caliber conversions with appropriate slide and barrel
• Medium grip size for balanced ergonomics and control
• Reversible magazine release works for lefty and righty shooters
• Standard polymer construction, durable and lightweight at 3.7 oz
• Removable grip weight compatible for aftermarket customization

Specifications

Frequently Asked Questions

What do I need to convert my P320 to a different caliber with this grip module?

You'll need a P320 firing control unit (FCU), this grip module, a P320 full-size slide in your target caliber, a matching barrel, and magazines for that caliber. The FCU is the regulated component you may already own; this frame assembly is where the modular magic happens.

Is this grip module compatible with my existing P320 magazines and ammunition?

This grip module itself is the frame; it doesn't chamber a round or feed ammunition. Once you install it with a slide and barrel for 9mm, .40 S&W, or .357 Sig, you'll use magazines and ammo for that specific caliber.

Does this come with the extended magwell or internal weight?

No. This grip module ships without the extended magwell or internal weight system. Both are available separately if you want to add them to customize your build.

Will this grip module work for both right- and left-handed shooters?

Yes. The reversible magazine release can be configured for either hand without modification, making it equally suitable for lefty and righty shooters.