Description
The SIG SAUER P320 Full-Size 9mm 4.7″ Nitron (2)10rd is a striker-fired, modular pistol that gives you a reliable platform for range training and home defense. With its full-size grip module and 4.7-inch Nitron-coated barrel, this handgun delivers the sighted accuracy and shootability you need, whether you’re teaching a new shooter or honing your own skills.
| Manufacturer | SIG SAUER (per manufacturer specs) |
|---|---|
| Model | P320 Full-Size |
| Material | Stainless steel slide with Nitron finish, polymer grip module |
| Compatibility | Accepts SIG SAUER P320 full-size magazines; optic-ready with PRO footprint for micro red dots |
| Finish | Nitron |
| Weight | 29.6 oz (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Modular Grip System — Why it matters: You can swap grip modules to fit different hand sizes, making this pistol adaptable for every family member who trains with it.
- Optic-Ready Slide with PRO Footprint — Why it matters: Mount a micro red dot without milling, giving you faster target acquisition and a clearer sight picture for low-light or defensive use.
- SIGLITE Night Sights — Why it matters: These front and rear tritium sights glow in the dark, so you can aim confidently at night without needing batteries or a light.
- Full-Length Accessory Rail — Why it matters: Attach a weapon light or laser for home-defense scenarios, helping you identify threats in the dark.
Who It’s For
This SIG SAUER P320 Full-Size is built for families who want a dependable pistol for the range and the nightstand. It’s a great choice for beginner shooters because the full-size grip reduces felt recoil, and the modular design lets you adjust the fit as skills grow. Experienced shooters will appreciate the optic-ready slide and the consistent trigger pull.
Pros / Cons
- Pros: Modular grip fits multiple hand sizes; optic-ready slide saves on gunsmithing; SIGLITE sights are always on; 10-round magazines comply with restricted states; reliable striker-fired action.
- Cons: The stock trigger has a slightly longer reset than aftermarket triggers from brands like Timney or Geissele — a trade-off for durability and safety.
Comparison with Competitors
| Feature | SIG SAUER P320 Full-Size | Zev Technologies OZ9 | Agency Arms AOS Glock 17 |
|---|---|---|---|
| Price | $487.33 | $1,200+ | $1,500+ |
| Slide Finish | Nitron | Cerakote | Nitride |
| Optic Ready | Yes (PRO footprint) | Yes (RMR/Holosun) | Yes (Agency Optic System) |
| Modular Grip | Yes (interchangeable) | Yes (modular chassis) | No (standard frame) |
| Magazine Capacity | 10 rounds (included) | 17 rounds | 17 rounds |
The Zev Technologies OZ9 and Agency Arms AOS Glock 17 are premium custom builds with higher price tags. The P320 gives you a similar modularity and optic-ready slide at a fraction of the cost — a smart choice for families who want performance without breaking the bank.
Frequently Asked Questions
Is the SIG SAUER P320 Full-Size 9mm 4.7″ Nitron (2)10rd good for beginners?
Yes. The full-size frame and 4.7-inch barrel help manage recoil, making it easier for new shooters to stay on target. The modular grip also lets you adjust the fit as you learn.
Does this pistol come with a manual safety?
This model does not include a manual safety. It relies on the striker-fired trigger safety and internal drop safety. If you prefer a manual safety, look for the P320 M18 or a variant with the thumb safety option.
Can I use standard-capacity magazines in this P320?
Yes, the P320 Full-Size accepts standard 17-round magazines, but it ships with two 10-round magazines for compliance with restricted states. You can purchase higher-capacity magazines separately where allowed by law.
What optics fit the PRO footprint slide?
The PRO footprint accepts micro red dots like the SIG SAUER Romeo1, Romeo1 Pro, and Leupold DeltaPoint Pro. Always check the manufacturer’s mounting instructions for proper installation.
✅ Nationwide delivery (all 50 states) — ✅ Ships 1-2 business days — ✅ 30-day returns — ✅ Secure checkout
Last updated: April 2026
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