Sig Sauer 8901621 Grip Module Assy P365Xmacro 9/380 Blk
The Sig Sauer P365X-Macro grip module is the foundation of a highly shootable, compact carry gun. This factory grip assembly is designed specifically for the P365X-Macro platform in 9mm and .380 ACP, engineered to give you a full-sized grip on a gun that still carries like a subcompact. If you're building a P365X-Macro or need to replace or swap your existing grip module, this is the genuine Sig Sauer part that'll give you the controls and ergonomics the platform is known for.
The grip module houses the trigger mechanism and safety lever and is the serialized component of your pistol, so fitment and reliability matter. This is OEM Sig Sauer, not a third-party knockoff. It's finished in black and built to the same standards as your factory gun. Whether you're setting up a new build, repairing a worn unit, or keeping a spare on hand, you're getting the exact component Sig ships from the factory.
Compatible with both 9mm and .380 ACP P365X-Macro variants, this grip module pairs with the slide and fire control group to create a pistol that balances capacity, shootability, and concealability—exactly what makes the X-Macro line popular with serious carry shooters and competition users alike.
Key Features
- Factory OEM Sig Sauer grip module for P365X-Macro platform
- Serialized frame component—genuine factory part
- Compatible with 9mm and .380 ACP calibers
- Black finish
- Full-sized grip geometry on a compact carry footprint
Specifications
| Manufacturer | Sig Sauer |
| Part Number | 8901621 |
| Firearm Platform | P365X-Macro |
| Caliber Compatibility | 9mm, .380 ACP |
| Finish | Black |
Frequently Asked Questions
Will this grip module work with my P365X-Macro?
Yes—this is the factory grip module assembly for the P365X-Macro and is compatible with both 9mm and .380 ACP variants of that platform.
Is this a factory Sig Sauer part?
Yes. This is an OEM Sig Sauer grip module, part number 8901621, built to factory specifications. It is the serialized frame component of your pistol.
Can I use this on other P365 models?
This grip module is designed specifically for the P365X-Macro. Fitment to other P365 variants is not covered by the facts provided—consult Sig Sauer or your gunsmith if compatibility with other models is a concern.
What's included?
You receive the grip module assembly. Slide, recoil spring, and other components are sold separately.

