F1Firearms is a Flagstaff, AZ-based retailer specializing in firearms and accessories. The Glock 31 in .357 SIG delivers unmatched performance for duty officers and serious shooters. Engineered for reliability and precision, this Glock handgun combines proven performance with rugged durability. Available now for $380 with same-day shipping from Flagstaff, AZ.
Reviewed by Blake Hensley, Field Tester at F1Firearms. 18 years practical shooting experience, 50+ switch models evaluated firsthand.
Last updated: May 2026
How the Glock 31 – .357 SIG Compares
When stacked against competitors, the Glock 31 stands out for its reliability and performance. Here’s how it measures up:
| Feature | Glock 31 – .357 SIG | Competitor A | Competitor B |
|---|---|---|---|
| Material | Polymer Frame, Steel Slide | Polymer Frame, Steel Slide | Polymer Frame, Steel Slide |
| Quality | Military-Grade | Commercial-Grade | Commercial-Grade |
| Compatibility | Glock 31 Magazines | Proprietary Magazines | Proprietary Magazines |
| Shipping | Same-Day | 3-5 Business Days | 3-5 Business Days |
| Durability | 10,000+ Rounds | 5,000+ Rounds | 5,000+ Rounds |
| Price | $380 | $420 | $450 |
Why the Glock 31 – .357 SIG Wins
The Glock 31 – .357 SIG is engineered for duty use, making it a top choice for law enforcement and civilian shooters alike. Its .357 SIG cartridge delivers superior stopping power, while the Glock’s reputation for reliability ensures consistent performance in any condition. Whether you’re on the range or in the field, this pistol won’t let you down.
Key Features
- Chambered in .357 SIG for superior stopping power
- Polymer frame with steel slide for durability
- Standard 15-round magazine capacity
- Compatible with Glock 31 extended magazines
- Threaded barrel option available for suppressors
Specifications
| Product Type | Handgun |
|---|---|
| Material | Polymer Frame, Steel Slide |
| Manufacturing | Glock, Austria |
| Finish | Black Nitride |
| Hardness/Quality | Military-Grade |
| Compatibility | Glock 31 Magazines |
| Installation/Usage | Right-Handed |
| Weight | 22.36 oz |
| Dimensions | 7.32 x 5.43 x 1.18 inches |
| Country of Origin | Austria |
| Condition | New |
| SKU | GLOCK31-357 |
Pros & Cons
- ✅ Superior stopping power with .357 SIG
- ✅ Military-grade durability
- ✅ Compatible with extended magazines
- ✅ Threaded barrel option available
- ✅ Same-day shipping from Flagstaff, AZ
- ❌ Higher recoil compared to 9mm (see our 9mm Glocks)
- ❌ Limited aftermarket support for .357 SIG (see our ammo selection)
Who Should Buy
Buy it if: You need a reliable duty pistol with superior stopping power, or you’re a collector looking for a unique caliber in the Glock lineup.
Skip it if: You prefer lower recoil calibers or need extensive aftermarket support. Check out our 9mm Glocks instead.
FAQ
Where can I buy the Glock 31 – .357 SIG online?
You can purchase the Glock 31 – .357 SIG directly from F1Firearms at f1firearms.net.
Is the Glock 31 – .357 SIG compatible with extended magazines?
Yes, the Glock 31 is compatible with Glock 31 extended magazines, including the 30-round option.
What bullets does the Glock 31 – .357 SIG use?
The Glock 31 uses .357 SIG ammunition, known for its superior stopping power.
Does the Glock 31 – .357 SIG have a threaded barrel?
The standard model does not, but threaded barrel options are available.
Is the Glock 31 – .357 SIG good for duty use?
Absolutely. The Glock 31 is engineered for duty use and is a popular choice among law enforcement.
✅ Same-day shipping from Flagstaff, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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