Sig Sauer P320 Full Nitron .40 SW 4.7-inch 10Rds SIGLITE Night Sights
Kansas Gunshop is a Wichita, KS-based retailer specializing in quality firearms and accessories. The Sig Sauer P320 Full Nitron .40 SW is a striker-fired semi-auto pistol with a 4.7-inch barrel and SIGLITE night sights. Built with a modular polymer frame and Nitron finish, this pistol delivers reliable performance. Available now for $575.99 with same-day shipping.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
Specifications
| Product Type | Semi-Auto Pistol |
|---|---|
| Caliber | .40 SW |
| Barrel Length | 4.7 inches |
| Capacity | 10 rounds |
| Action | Striker-fired (Double Action Only) |
| Frame Material | Polymer |
| Finish | Nitron |
| Sights | SIGLITE Night Sights |
| Weight | 29.6 oz (unloaded) |
| Overall Length | 8 inches |
| Country of Origin | USA |
| Condition | New |
Key Features
- Modular design allows for easy customization
- SIGLITE night sights for low-light visibility
- Striker-fired system with consistent trigger pull
- Nitron finish provides corrosion resistance
- Ergonomic polymer frame with textured grip
Who Should Buy This Pistol
Buy it if: You want a full-size duty pistol with proven reliability, need night sights for low-light conditions, or prefer the .40 SW caliber for personal defense.
Skip it if: You need a compact carry pistol (consider the P320 Compact instead) or prefer higher capacity (look at 9mm models).
Pros & Cons
- ✅ SIGLITE night sights stay visible in all conditions
- ✅ Nitron finish resists wear and corrosion
- ✅ Modular system allows for caliber changes
- ✅ Consistent trigger pull for better accuracy
- ✅ Proven reliability in law enforcement use
- ❌ .40 SW recoil may be sharp for some shooters
- ❌ 10-round capacity limits compared to 9mm versions
How It Compares
| Feature | Sig P320 Full | Glock 22 Gen 5 | Taurus PT140 |
|---|---|---|---|
| Price | $575.99 | $549.99 | $329.99 |
| Barrel Length | 4.7″ | 4.49″ | 3.25″ |
| Capacity | 10 rounds | 15 rounds | 10 rounds |
| Sights | Night Sights | Standard | Standard |
| Modular | Yes | No | No |
| Finish | Nitron | nDLC | Blued |
Frequently Asked Questions
Where can I buy the Sig P320 Full online?
Available at Kansas Gunshop (kansas-gunshop.com) with same-day shipping from Wichita, KS.
Does this model have a manual safety?
No, the P320 Full uses Sig’s striker-fired system without external safety.
Can I convert this to 9mm?
Yes, with a caliber exchange kit (sold separately).
What holsters fit the P320 Full?
Most holsters designed for full-size P320 models will work.
Is this California compliant?
Yes, this 10-round model meets CA requirements.
What’s included in the box?
Pistol, (1) 10-round magazine, case, and owner’s manual.
Do you offer layaway?
Yes, we offer 90-day layaway plans – contact us for details.
✅ In stock — ready to ship today
✅ Same-day shipping from Wichita, KS
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: Semi Automatic Handguns | Full Shop
As a Kansas-licensed FFL dealer since 2008, I’ve handled hundreds of P320 models and can confirm this is one of Sig’s most reliable full-size pistols. The Nitron finish holds up well to daily carry, and the night sights are a worthwhile upgrade over standard models.
Last updated: April 2026
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