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Sig Sauer
The Sig Sauer 8901478 black polymer grip module is a factory replacement frame for the P320 platform, engineered to restore or customize your modular pistol. This grip module fits full-size P320 variants including the M17 and M18, and accepts the fire control unit (FCU) with manual safety installed. The polymer construction keeps weight down while maintaining durability across thousands of rounds, making it ideal for range shooters, duty weapons, and those who rotate between slide configurations.
Sig Sauer designed this grip module to work with fire control units chambered in 9mm, .40 S&W, and .357 SIG—meaning you can swap calibers by changing your FCU and slide without buying an entirely new pistol. The medium grip circumference suits most hand sizes and accommodates both 4.7" and 3.9" slide lengths, so whether you're running the duty-size P320 or the compact M18, this frame will mate properly. Magazine disconnect compatibility is built in, a feature that matters if you prioritize drop-safety or comply with certain range rules.
Whether you've damaged your original grip, want a spare for your modular P320 setup, or simply prefer having a factory Sig module on hand, this is the genuine part that ensures slide-to-frame fit and reliability. Black polymer blends with virtually any modern pistol aesthetic and resists wear in the field or at the bench.
| Brand | Sig Sauer |
| Model | Full Size / M17 / M18 |
| Pistol Size | Full-Size |
| Color | Black |
| Grip Material | Polymer |
| Compatible Calibers (FCU) | 9mm, .40 S&W, .357 SIG |
| Magazine Disconnect | Yes |
| Compatible Slide Lengths | 4.7", 3.9" |
This grip module is designed for fire control units with a manual safety in 9mm, .40 S&W, or .357 SIG. It does not fit FCUs without a manual safety or those in other calibers.
Yes. This full-size grip module is compatible with the M17 and M18, and it accommodates both the 4.7" and 3.9" slide configurations used on those models.
Yes, this is an OEM (original equipment manufacturer) replacement grip module made by Sig Sauer.
No. This grip module is only the frame; you'll pair it with your existing fire control unit and slide. Make sure your FCU has a manual safety and is chambered in 9mm, .40 S&W, or .357 SIG for compatibility.
Sig Sauer
The Sig Sauer 8901478 black polymer grip module is a factory replacement frame for the P320 platform, engineered to restore or customize your modular pistol. This grip module fits full-size P320 variants including the M17 and M18, and accepts the fire control unit (FCU) with manual safety installed. The polymer construction keeps weight down while maintaining durability across thousands of rounds, making it ideal for range shooters, duty weapons, and those who rotate between slide configurations.
Sig Sauer designed this grip module to work with fire control units chambered in 9mm, .40 S&W, and .357 SIG—meaning you can swap calibers by changing your FCU and slide without buying an entirely new pistol. The medium grip circumference suits most hand sizes and accommodates both 4.7" and 3.9" slide lengths, so whether you're running the duty-size P320 or the compact M18, this frame will mate properly. Magazine disconnect compatibility is built in, a feature that matters if you prioritize drop-safety or comply with certain range rules.
Whether you've damaged your original grip, want a spare for your modular P320 setup, or simply prefer having a factory Sig module on hand, this is the genuine part that ensures slide-to-frame fit and reliability. Black polymer blends with virtually any modern pistol aesthetic and resists wear in the field or at the bench.
| Brand | Sig Sauer |
| Model | Full Size / M17 / M18 |
| Pistol Size | Full-Size |
| Color | Black |
| Grip Material | Polymer |
| Compatible Calibers (FCU) | 9mm, .40 S&W, .357 SIG |
| Magazine Disconnect | Yes |
| Compatible Slide Lengths | 4.7", 3.9" |
This grip module is designed for fire control units with a manual safety in 9mm, .40 S&W, or .357 SIG. It does not fit FCUs without a manual safety or those in other calibers.
Yes. This full-size grip module is compatible with the M17 and M18, and it accommodates both the 4.7" and 3.9" slide configurations used on those models.
Yes, this is an OEM (original equipment manufacturer) replacement grip module made by Sig Sauer.
No. This grip module is only the frame; you'll pair it with your existing fire control unit and slide. Make sure your FCU has a manual safety and is chambered in 9mm, .40 S&W, or .357 SIG for compatibility.
