Description
If you’re looking for a do-it-all 9mm that pulls duty as a reliable carry piece and a fun range companion, the sig sauer p320 compact 9mm 15 + 1 3.90″ nitron is a tough act to beat. It’s a modular, striker-fired handgun with a smooth trigger and an adaptable grip that fits most hand sizes. The slide is optic-ready with a Pro footprint, and it comes with high-visibility SIGLite night sights and a ROMEO-RS Pro optic already installed. Two magazines are included. This is a factory-new pistol, ready to go.
| Manufacturer | Sig Sauer (per manufacturer specs) |
|---|---|
| Model | P320 Compact |
| Material | Stainless steel slide, polymer frame |
| Compatibility | P320 holsters, grip modules, and magazines |
| Finish | Nitron |
| Weight | 25.8 oz (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Modular Grip System — Why it matters: You can swap the grip module to fit your hand size or change the frame color without buying a whole new gun. It’s like having a custom fit right out of the box.
- Optic-Ready Slide with Pro Footprint — Why it matters: The ROMEO-RS Pro optic is pre-installed, so you get a red dot without any extra gunsmithing or adapter plates. That’s a real time and money saver.
- SIGLite Night Sights — Why it matters: These tritium sights glow in low light for reliable aiming at dusk or indoors. They co-witness with the optic, giving you two sighting options.
- 15+1 Round Capacity — Why it matters: With 16 rounds on tap, you have enough firepower for everyday carry or a full range session without constant reloading.
- Striker-Fired Action with Consistent Trigger — Why it matters: The trigger pull is the same every time — no stacking, no surprises. That makes it easier to shoot accurately, especially for newer shooters.
Who It’s For
This pistol is built for anyone who wants a reliable compact 9mm for concealed carry, home defense, or regular range use. It’s a great fit for new gun owners because the modular grip lets you adjust the fit, and the included optic makes target acquisition faster. Experienced shooters will appreciate the upgrade potential and the proven P320 platform. If you’re a local looking for a solid all-around handgun, this one deserves a spot in your safe.
Pros & Cons
- Pro: Modular grip system fits a wide range of hand sizes — swap it in seconds.
- Pro: Comes with a ROMEO-RS Pro optic installed, saving you $200+ over buying separately.
- Pro: SIGLite night sights co-witness with the red dot for backup aiming.
- Con: The factory trigger has a bit of take-up before the break. Some shooters prefer a shorter pull, but it’s smooth and consistent once you get used to it.
Comparison
| Feature | Sig Sauer P320 Compact | Zev Technologies OZ9 Compact | Glock 19 Gen5 |
|---|---|---|---|
| Caliber | 9mm | 9mm | 9mm |
| Capacity | 15+1 | 15+1 | 15+1 |
| Barrel Length | 3.90″ | 4.02″ | 4.02″ |
| Weight (unloaded) | 25.8 oz | 23.6 oz | 23.6 oz |
| Optics Ready | Yes (Pro footprint, optic included) | Yes (RMR footprint, no optic) | Yes (MOS, no optic) |
| Price | $645.69 | $1,200+ | $550 |
| Grip Modularity | Full (swap grip modules) | Limited (frame only) | None (fixed grip) |
The Zev OZ9 is a premium race gun with a steel frame, but it costs nearly double. The Glock 19 is a solid workhorse, but you’ll need to buy an optic separately and you can’t adjust the grip. The P320 Compact gives you the best value with the included optic and modular grip.
FAQ
Does the Sig Sauer P320 Compact come with the ROMEO-RS Pro optic installed?
Yes, this model ships from the factory with the ROMEO-RS Pro red dot optic mounted on the slide. It’s zeroed and ready to use. You also get the SIGLite night sights for backup.
Can I use standard P320 holsters with this model?
Yes, this Compact model fits most P320 holsters designed for a 3.9″ barrel and standard rail. Always double-check holster compatibility for your specific setup, especially if you add a light or laser.
Is the grip module interchangeable with other P320 sizes?
Absolutely. The P320 Compact grip module accepts standard P320 magazines and can be swapped with any other P320 grip module (full-size, carry, subcompact) in seconds. No tools needed — just push out the takedown pin.
What is the warranty on this pistol?
Sig Sauer backs the P320 with a limited lifetime warranty for the original owner. It covers defects in materials and workmanship. If you have an issue, just contact their customer service.
Ready to pick up your sig sauer p320 compact 9mm 15 + 1 3.90″ nitron? We ship to all 50 states, and orders go out in 1-2 business days. You get a 30-day return window, and checkout is secure. If you have questions, just ask — we’re here to help.
✅ Nationwide delivery (all 50 states)
✅ Ships 1-2 business days
✅ 30-day returns
✅ Secure checkout
Looking for more options? Check out our Semi Auto Handguns, Concealed Carry, or Optics.
Last updated: April 2026
Reviews
There are no reviews yet.