Glock G31 Gen3 .357 SIG Full-Size Pistol, 4.49 in Barrel, Matte Black, Excellent, 2x 15-Round Magazines
This Glock 31 Gen3 is a full-size .357 SIG with a 4.49 in steel barrel, fixed Glock polymer sights, and the classic Gen3 frame with finger grooves. It includes two factory 15-round magazines and features the Glock accessory rail, rear-only slide serrations, and a non-ported slide. Marked with GLOCK, INC., SMYRNA, GA, AUSTRIA, this Austrian-made model has been discontinued by the manufacturer as of 2025.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Minimal handling marks are present. Please refer to the pictures for a complete view of the condition.
What’s Included
- Glock G31 Gen3 .357 SIG pistol
- Two 15-round factory Glock magazines (.357 marked, Glock-logo "AUSTRIA" baseplates)
The G31 is Glock’s full-size take on the .357 SIG, offering a 15+1 capacity in a durable polymer-frame platform with a steel 4.49 in barrel. The slide wears a matte black finish with rear-only vertical serrations and an external extractor, and it is non-ported.
This Gen3 configuration includes the familiar finger grooves, a small left-side magazine release, and no interchangeable backstraps. The dustcover integrates the Glock accessory rail for mounting compatible lights or lasers.
Sights are Glock fixed polymer with a white dot front and white U-notch rear, providing a simple, consistent sight picture.
The pistol uses Glock’s Safe Action system with three passive safeties and a trigger safety tab. Controls are straightforward and consistent with Gen3 design.
Manufactured in Austria and marked GLOCK, INC., SMYRNA, GA, AUSTRIA, this model has been discontinued as of 2025, adding interest for buyers looking for a .357 SIG Glock in excellent condition with original configuration features.