The SIG Sauer P320-M17 is a full-size, striker-fired pistol built for duty and performance. It’s designed for shooters who demand military-proven reliability in a versatile platform. Based on the U.S. Army’s M17 service pistol, it offers consistent performance right out of the box. We’ve carried this model since summer 2025, and its popularity has made it a regular reorder item for our shop.
Key Features
- Military-Proven Design: Based on the U.S. Army’s M17 service pistol.
- Modular FCU: The serialized Fire Control Unit allows for easy caliber and grip module swaps.
- Optics-Ready Slide: Comes milled from the factory for easy red dot sight mounting.
- Manual Safety: Includes an ambidextrous manual safety lever.
- High-Capacity: Ships with two 17-round magazines.
Specifications
| Model | P320-M17 |
| Caliber | 9mm |
| Barrel Length | 4.7″ |
| Overall Length | 8.0″ |
| Height | 5.5″ |
| Weight (measured) | 6.8 oz |
| Sights | Steel 3-dot, suppressor-height |
| Magazine Capacity | 17+1 |
Frequently Asked Questions
What ammunition does this pistol run best with?
Our staff testing shows it runs flawlessly with standard 115gr and 124gr FMJ range ammunition. We experienced one hiccup with a specific 147gr subsonic load during testing, but standard pressure rounds function reliably.
Is the slide cut for an optic?
Yes. The slide comes milled from SIG Sauer with their proprietary footprint, ready for SIG’s ROMEO1PRO or other compatible optics with an adapter plate.
Does it come with a manual safety?
Yes. This M17 model includes an ambidextrous manual safety lever, matching the configuration of the U.S. military sidearm.
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