The GLOCK 31 is a .357 SIG caliber pistol built on the proven Gen 3 platform. It’s for shooters who want the flat trajectory and barrier penetration of the .357 SIG in a duty-proven, polymer-frame package. We added this model to our catalog in late 2024, and its reliability is underscored by zero warranty claims in over a year of sales.
Key Features
- Proven .357 SIG Caliber: Delivers high velocity and energy in a compact cartridge designed for superior barrier penetration.
- Gen 3 Reliability: Features the classic “Safe Action” system with a consistent trigger pull and the rugged simplicity of the third-generation design.
- Durable Polymer Frame: Lightweight and corrosion-resistant, with integrated accessory rail for mounting lights or lasers.
- Tenifer Finish: Provides exceptional hardness and corrosion resistance to the steel slide and barrel.
- Standard Capacity: Comes with 15-round magazines, offering substantial firepower in a service-sized handgun.
Specifications
| Caliber | .357 SIG |
| Barrel Length | 4.49 inches |
| Overall Length | 7.32 inches |
| Height | 5.43 inches |
| Width | 1.18 inches |
| Weight (measured) | 5.1 oz |
| Magazine Capacity | 15 rounds |
| Action | Safe Action (DAO) |
Frequently Asked Questions
Is the .357 SIG caliber difficult to find?
While not as ubiquitous as 9mm or .40 S&W, .357 SIG ammunition is readily available from major manufacturers online and in many well-stocked stores. It remains a popular choice for duty and defensive use.
Can I use .40 S&W magazines in the GLOCK 31?
Yes. The GLOCK 31 is designed to accept standard GLOCK 22 (.40 S&W) magazines. The cartridges share the same external case dimensions, allowing for reliable feeding and function.
What generation is this GLOCK 31?
This is a Gen 3 model. It features the finger grooves on the front strap, the textured “RTF” grip surface, and the accessory rail without the front serrations found on later generations.
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