SIG SAUER P320 9/40/357 Carry Medium Grip Assembly

The SIG SAUER P320 9/40/357 Carry Medium Grip Assembly is the modular heart of SIG's legendary P320 platform—the grip module that lets you reconfigure your pistol to match your carry needs, your hand size, and your preferred caliber. If you already own a P320 or P250 firing control unit and want to swap calibers or adjust fit, this medium-frame grip assembly is your gateway. It accepts your existing FCU and pairs with a compatible slide and barrel in 9mm Luger, .357 SIG, or .40 S&W to build a compact carry gun that's truly yours.

The modular P320 design is one of the reasons the platform dominates law enforcement and concealed carry—you're not locked into one configuration. This carry-length grip assembly splits the difference between the subcompact and full-size frames, offering shooters with medium hands a balance of control and concealability. Whether you're building a deep-carry EDC rig or setting up a second P320 that shares your existing firing control unit, this assembly gives you the flexibility that made the P320 a phenomenon.

Installation is straightforward: drop your FCU into the grip module, add your chosen slide and barrel assembly, and you're ready to run. It's the kind of modularity that appeals to serious shooters who refuse to compromise between gun-to-gun consistency and real-world carry pragmatism.

Key Features

• Modular design: accepts your existing P320 or P250 firing control unit
• Compact/carry frame size in medium grip dimensions
• Compatible with 9mm Luger, .357 SIG, and .40 S&W slide and barrel assemblies
• Purpose-built for concealed carry without sacrificing shootability

Specifications

Frequently Asked Questions

What do I need to complete a P320 using this grip assembly?

You'll need a P320 or P250 firing control unit and a compatible slide and barrel assembly chambered in 9mm Luger, .357 SIG, or .40 S&W.

Can I use my existing P320 firing control unit with this grip?

Yes. The grip assembly is designed to accept a P320 or P250 FCU, allowing you to swap control units between different grip modules and calibers.

What's the difference between this and other P320 grip sizes?

This is a medium grip in the carry (compact) frame size. SIG offers different grip circumferences (small, medium, large) and frame lengths (subcompact, carry, full-size) so you can dial in the ergonomics that fit your hand and your mission.

Is this grip assembly suitable for concealed carry?

Yes. The carry-length frame is designed for concealment while maintaining shootability. The medium grip size provides an accessible option for shooters between small and large hand dimensions.