Firearms

Glock G31 Gen3 .357 SIG 4.49-inch MOS

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Specifications

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Notable Variants

Aftermarket Ecosystem

Historically Significant Examples

Serial Number Data

Production data from factory records and collector research. Year ranges are approximate for pre-1968 firearms.

Years	Serial Range	Count	Factory	Country	Confidence

Glock 31 Gen3 full-size .357 SIG MOS with factory optic cut. Rare optic-ready configuration of the full-size .357 SIG platform.

Type: Pistol

Action: Semi-Automatic

Caliber: .357 SIG

Capacity: 15

Year introduced: 2017, Austria

Weight: 26.1 oz

Overall length: 7.32"

Status: Active

Intended use: Service, Duty, Law Enforcement