Sig Sauer 8901479 Black Polymer Fits P320/M17/M18

The Sig Sauer 8901479 compact grip module is a factory replacement grip for shooters running a P320, M17, or M18 platform with a fire control unit equipped with manual safety. Whether you're customizing your duty carry, competition setup, or personal defense pistol, this polymer grip module lets you dial in the fit and feel that works best for your hand and shooting style. Medium circumference sizing makes it the go-to choice for most shooters looking to swap in a fresh grip or rebuild their platform from the frame up.

Built from durable standard polymer, this grip is designed to handle the rigors of the range, duty carry, and field use. It's compatible with 9mm, .40 S&W, and .357 SIG fire control modules—so if you're running any of those calibers in your P320 ecosystem, this grip will mate with your FCU. The black finish is clean, professional, and works with any aesthetic direction you're taking your build.

One practical detail: this grip module accommodates slide lengths of 4.7", 3.9", and 3.6", meaning whether you're running a full-size, carry-length, or subcompact slide, the frame-to-trigger assembly relationship stays consistent. Magazine disconnect compatibility is included, so safety features stay intact across your configuration.

Key Features

• Factory replacement grip module for P320, M17, and M18 platforms
• Compatible with 9mm, .40 S&W, and .357 SIG fire control units
• Works with 4.7", 3.9", and 3.6" slide configurations
• Medium grip circumference for wider hand compatibility
• Magazine disconnect compatible for safety compliance
• Durable standard polymer construction
• Black finish

Specifications

Frequently Asked Questions

Which calibers and fire control modules does this grip work with?

This grip module is compatible with fire control units in 9mm, .40 S&W, and .357 SIG only. Your FCU must also have a manual safety installed for proper function with this grip.

Will this grip fit my P320 slide length?

Yes, this compact grip module accommodates 4.7", 3.9", and 3.6" slides, so it works across full-size, carry, and subcompact slide configurations on the P320 platform.

What's included, and do I need anything else to install this?

You receive the grip module itself. Installation requires your compatible fire control unit and appropriate slide. If you don't already have an FCU, you'll need to source one separately.

Is the medium grip size right for me?

Medium circumference is the standard sizing for most P320 shooters. If you have larger hands, you may want to verify fit before purchase; if you have smaller hands, Sig Sauer offers other grip circumference options in their lineup.