Sig Sauer Grip Module Assy, 320, 45, Com, Medium, Blk

The Sig Sauer P320 grip module is the foundation of modular pistol customization. This factory grip module assembly is designed for the P320 platform in .45 ACP, sized to Medium dimensions with a black finish. Whether you're building a new P320 from the ground up or refreshing your current one, a quality grip module swap is one of the most straightforward ways to dial in ergonomics and aesthetics without gunsmithing. This OEM Sig part ensures compatibility and reliability across your modular P320 configuration.

The P320 platform has earned its reputation for adaptability—fire control group, slide, and barrel can all be swapped to change calibers or configurations, but the grip module is where your hand meets the gun every single time. Size and comfort matter. Medium grip modules fit hands that want a balanced feel—not cramped, not oversized. Black anodize is the practical standard: durable, familiar, and pairs cleanly with any slide or accessory package you run.

This is an OEM Sig Sauer part, so you're getting the same manufacturing standard and fit tolerances that ship with factory P320 pistols. If you're a competitive shooter chasing different grip profiles for different matches, a hunter swapping your duty gun to a new role, or someone who just wants a fresh look and feel on an existing platform, the P320 grip module gives you that flexibility without replacing the entire gun.

Key Features

• Factory Sig Sauer OEM grip module for P320 platform
• Caliber-specific fit for .45 ACP P320 models
• Medium size for balanced ergonomic fit
• Black finish for durability and versatile aesthetics
• Drop-in replacement—no gunsmithing required
• Modular design pairs with any compatible P320 slide and fire control group

Specifications

Frequently Asked Questions

Will this P320 grip module fit my existing slide and fire control group?

Yes. The P320 grip module is fully modular—any OEM P320 slide and fire control group are compatible with this medium-sized grip in black. If you already own a P320, you can simply remove your current grip module and install this one.

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

Medium is the mid-range hand size option in the P320 lineup. Sig Sauer offers grip modules in multiple sizes to accommodate different hand dimensions and shooting preferences. Medium strikes a balance for most shooters.

Is this for the .45 ACP P320 only, or can I use it on other calibers?

This grip module assembly is designed for P320 .45 ACP models. The P320 platform supports multiple calibers (9mm, .40 S&W, .45 ACP), and grip modules are caliber-specific. Check your current P320 caliber before purchasing.

Do I need special tools to install this grip module?

The P320 grip module is a field-replaceable part. You'll need to disassemble your current gun, remove the fire control group and slide from the old grip, and reassemble them onto this new module. No gunsmithing is required, though familiarity with P320 takedown is helpful.