Description
Product Overview
The Glock 31 is a duty-proven semi-automatic pistol chambered in the potent .357 SIG cartridge. Designed for professionals and experienced shooters who demand a specific ballistic profile, this model delivers a unique combination of high velocity, manageable recoil, and the legendary reliability of the Glock platform. With a loaded weight of just 23.28 ounces, it maintains a balance between controllability and all-day carry comfort. Primary uses for the GLOCK 31 include duty carry for law enforcement and security personnel, home defense, and recreational shooting where the flat trajectory and energy of the .357 SIG cartridge are preferred.
Key Features
- .357 SIG Caliber: Offers a ballistic advantage with exceptionally high muzzle velocity, resulting in a flat trajectory and reliable terminal performance, making it effective at medium ranges.
- Proven Reliability: Built on Glock’s Safe Action system, the G31 is engineered to function flawlessly in all conditions, with a reputation for extreme durability and minimal maintenance.
- Optimized Weight & Balance: At 23.28 ounces loaded, the pistol’s weight helps mitigate the snappy recoil impulse of the .357 SIG, aiding in faster follow-up shots compared to lighter polymer-framed alternatives.
- Standard Magazine Capacity: Accepts high-capacity magazines (capacity varies by state law), providing a substantial round count in a duty-sized frame, a critical factor for professional application.
- 114mm Barrel Length: This barrel length optimizes the .357 SIG cartridge’s velocity potential while maintaining a compact enough profile for holster carry.
- Rugged Construction: Features Glock’s Tenifer finish on steel components and a polymer frame, ensuring corrosion resistance and long-term durability under heavy use.
Performance & Applications
The GLOCK 31’s performance characteristics make it suitable for specific, demanding roles. Its selection by agencies like the New Jersey State Police underscores its professional pedigree.
Law Enforcement & Duty Use: The .357 SIG cartridge is known for its ability to penetrate barriers while maintaining bullet integrity, a consideration for vehicular or tactical scenarios. The G31’s reliability under stress and in adverse environments makes it a trusted sidearm for duty carry.
Home Defense & Personal Security: For the knowledgeable civilian shooter, the G31 offers a potent defensive option. The high velocity of its caliber can provide an effective defensive response, and its simple operation under stress is a significant advantage. Its weight aids in managing recoil for more precise shot placement.
Recreational & Training: Shooters interested in the unique ballistic performance of the .357 SIG will find the GLOCK 31 an excellent platform. It serves as a robust trainer for those who carry similar Glock models in other calibers, maintaining identical manual of arms.
About Glock
Glock Ges.m.b.H. revolutionized the handgun industry with the introduction of its polymer-framed, Safe Action pistol in the 1980s. The brand’s reputation is built on a foundation of empirical evidence: unparalleled reliability, simplicity of design, and exceptional durability. Glock pistols are subjected to rigorous testing protocols, often exceeding military specifications. This commitment to engineering excellence has made Glock the sidearm of choice for a vast majority of law enforcement agencies in the United States and countless military and security units worldwide. When you choose a Glock, you are selecting a tool with a documented history of performance under the most extreme conditions, backed by decades of continuous refinement.
Why Buy From F1 Firearms AR-15
Located in Spring, TX, F1 Firearms AR-15 is a specialist retailer focused on providing vetted products to knowledgeable enthusiasts and professionals. We understand the specifications and intended use of firearms like the GLOCK 31. Our team prioritizes transparent information, compliance with all federal, state, and local regulations, and a straightforward purchasing process. We handle each transaction with the attention to detail it warrants, ensuring proper documentation and secure transfer through our network of affiliated FFL dealers. When you order from us, you are dealing with a specialist, not a generalist.
Make Your Decision
The GLOCK 31 is a specialized tool engineered for a specific ballistic purpose. It is not a general-purpose pistol but rather an optimal choice for those who require or appreciate the performance parameters of the .357 SIG cartridge in a proven, reliable platform. Consider your intended application, familiarity with the caliber’s characteristics, and local ammunition availability. If your needs align with its design—high-velocity, flat-shooting performance in a duty-ready package—the GLOCK 31 represents a logical and professional-grade selection.
Glock 31 u0026 the Death of .357 SIG Pistols – A Closer Look at the G31 Gen 4
Technical Specifications
Frequently Asked Questions
What type of sights does it have?
The GLOCK 31 comes equipped with standard sights, providing a clear sight picture.
Is this suitable for concealed carry?
With a 114″ barrel, this is better suited for duty use or open carry rather than concealed carry.
Does it come with a warranty?
Glock backs this firearm with their standard manufacturer warranty, reflecting their confidence in the product’s quality.
What caliber is the GLOCK 31?
The GLOCK 31 is chambered in .357, offering proven performance for its intended applications.
What is the magazine capacity?
This model has a standard capacity, meeting standard requirements.

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