SIG 320 for Sale
Browse Sig 320 listings from verified sellers across the U.S. on GunsAmerica.
Quick Look
The SIG Sauer P320 entered service in 2014 as a modular striker-fired pistol featuring a unique fire control unit. Its design emphasizes adaptability and ease of customization for various hand sizes and mission needs. Today, it ranks among the most popular service pistols worldwide, including military adoption by USSOCOM.
Why It's a Top Choice
- Modular system fits multiple grip sizes and calibers
- High reliability in military and law enforcement use
- Trigger unit can be removed for easy maintenance
- Ample aftermarket support for sights and accessories
- Consistent, smooth striker-fired trigger pull
Key Variants
P320 M17
The U.S. Army's official sidearm with enhanced durability and ambidextrous controls.
P320 XFive
Competition-focused model with extended barrel and improved trigger.
P320 XCompact
Compact carry pistol offering balance between concealability and capacity.
Competitor Comparison Table
| Feature | P320 | Glock 19 | SIG P365 |
|---|---|---|---|
| MSRP | $600–$700 | $500–$600 | $600–$700 |
| Capacity/Size | 15+1 (9mm) | 15+1 (9mm) | 10+1 (9mm) |
| Weight | 29 oz (full size) | 23.65 oz | 17.8 oz |
| Optics-Ready | Yes | Yes | Yes |
| Trigger Type | Striker-fired | Striker-fired | Striker-fired |
| Notable Pro | Modularity and adaptability | Proven reliability and simplicity | Compact concealability |
| Notable Con | Heavier than similar pistols | Less modular | Lower capacity |
Best Use Cases
- Military and law enforcement duty
- Self-defense and concealed carry
- Range practice and training
- Competition shooting with specialized models
- Firearms collection of modular handguns
FAQs
Can I change calibers on the SIG P320?
Yes, the P320’s modular fire control unit allows caliber conversions between 9mm, .40 S&W, and .357 SIG using compatible slide and barrel kits.
What is the trigger pull weight on the P320?
Factory trigger pull typically ranges from 5.5 to 6.5 lbs, offering consistent striker-fired performance.
How does the P320 compare to the Glock 19?
The P320 offers modularity and ambidextrous controls, while the Glock 19 is lighter and simpler with a long service record.
Prefer nearby results? Toggle to search local listings.
Sig Sauer P320 AXG Pro 320 P320AXG X-Wer
$1,449.99
ETS ETS Sig 320 EX 40RD 9MM
$27.99
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