Description Fourth generation Glock model 31 chambered in .357 Sig with three, ten round removable magazines and a 4.49″ barrel. Textured polymer frame with under barrel accessories rail and reversible magazine catch. Interchangeable backstrap. Striker fired polymer trigger with Safe Action trigger safety. Black finished serrated slide with white Glock bucket sights. Comes in its factory box with factory paperwork, magazine loader, lock, and three magazines. Must ship to a FFL holder. Condition: Very Good/Excellent with light scratches and handling wear. Light internal operational wear. Clean rifled bore. Barrel Length: 4.49″ Serial: BTZB429 Manufacturer: GLOCK Caliber: .357 SIG Model: 31 Gen 4 Book# 05512