Description
If you're looking to customize your P320 or P250 without replacing the serialized fire control unit, this compact medium grip module is a straightforward solution. The module comes in durable polymer construction that SIG Sauer designs to the same standards as factory pistols. This particular version uses the medium grip circumference, which works well for people with average to slightly larger hands who want a compact overall profile.
Compact Medium Grip Module Specifications
The grip module is engineered to work with 9mm, .40 S&W, and .357 SIG fire control units. You'll need the matching slide and barrel for your chosen caliber to complete the conversion. The compact frame length is designed to pair well with compact and sub-compact slides, and it accepts standard P320 magazines appropriate for the compact size. The medium grip sits in the middle of SIG's size options, giving you more hand coverage than a small grip while keeping the overall footprint smaller than a carry-sized module.
Installation and Compatibility
Swapping in a new grip module is simple and doesn't require any gunsmiths or special tools. Drop your existing fire control unit into the new module and you're done. The modular design is one of the P320 platform's best features, letting you tailor the gun's feel and ergonomics without touching the core serialized component. The medium size plays well with a range of hand sizes, though people with very small hands might find it slightly long for the trigger reach.
Factory polymer construction means it'll hold up to hard use at the range or wherever you carry. The black finish on this version matches most P320 components and blends with standard duty or carry setups.
Key Specifications
- Manufacturer: SIG SAUER
- Model: P320
- Manufacturer Part Number: GRIP-MOD-C-943-M-BLK
- UPC: 798681519422
- Caliber: 9mm, .40 S&W, .357 SIG
- Frame Size: Compact
- Grip Size: Medium
- Color: Black
- Material: Polymer
- Compatible Pistols: P320, P250
- Slide Length Compatibility: Compact and Sub-Compact
What’s Included
- Grip Module Assembly
Frequently Asked Questions
Do I need any special tools to install this grip module?
No. The installation is a simple drop-in swap. Remove your fire control unit from your current grip module and insert it into the new module. Most people can do it in a couple of minutes without any gunsmith or special equipment.
What magazines work with the compact medium grip module?
This module accepts standard P320 compact magazines, which hold 15 rounds. You can also run the larger 17 or 21-round magazines if you prefer extra capacity, though they'll extend below the grip.
Can I use this grip module on a full-size P320 slide?
No. The compact module is designed for compact and sub-compact slides. Using it on a full-size slide will leave the recoil spring and guide rod exposed, which looks wrong and isn't ideal. Stick with compact or sub-compact slides for this module.
Is the medium grip size right for my hand?
Medium works best for people with average to larger hands. If your hands are on the smaller side, you might prefer a small grip. If you have very large hands, you may find a large grip more comfortable. The module's size is really a personal preference thing, so consider handling different grip sizes if possible before ordering.





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