Description
The SIG Sauer P320 Compact is a modular, striker-fired pistol designed for concealed carry and duty use. Its serialized fire control unit allows for easy caliber and grip module swaps, making it a versatile platform. Since we started stocking it in early 2026, it has become one of our steady sellers in the compact category, with over 105 units sold to date.
Why This One?
- Modular Fire Control Unit (FCU): The serialized component is the firearm itself. This allows you to legally change calibers, slide lengths, and grip sizes by swapping inexpensive modules, not the entire gun.
- Proven Duty & Carry Reliability: Built on the same platform adopted by military and law enforcement agencies, offering consistent performance in a compact, manageable size.
- Excellent Trigger & Ergonomics: Features a smooth, consistent striker-fired trigger and an ergonomic grip angle that promotes natural point of aim and control.
- Optics & Sight Ready: The slide is cut for SIG Romeo1Pro and other popular micro red dots. Our staff has confirmed compatibility with both factory and aftermarket iron sights from Trijicon and AmeriGlo.
- Balanced Shootability: The compact size offers a good balance between concealability and a full firing grip, making it controllable for both practice and practical use.
Full Spec Sheet
| Caliber | 9mm |
| Capacity | 15+1 Rounds |
| Barrel Length | 3.9 inches |
| Overall Length | 7.2 inches |
| Height | 5.3 inches |
| Width | 1.3 inches |
| Weight (measured) | 6.3 oz (slide & FCU) |
| Action | Striker-Fired |
Q & A
Is the slide optics-ready?
Yes. The slide comes cut from the factory for the SIG Romeo1Pro footprint, which is also compatible with several other popular micro red dots using an adapter plate.
Can I change the grip size?
Yes. The modular design allows you to purchase different SIG grip modules in various sizes (Small, Medium, Large) and textures. Swapping the module takes less than a minute and requires no tools.
What magazines does it use?
It uses SIG Sauer P320 Compact 9mm 15-round magazines. Full-size P320 17-round and 21-round magazines will also function but will extend past the grip.
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