Description Fourth Generation Glock 31 chambered in .357 Sig with three, fifteen round magazines and a 4.49″ barrel. Fully textured polymer frame with interchangeable backstrap and under barrel accessories rail. Reversible magazine catch. Polymer trigger with trigger safety. Serrated slide with white painted red fiber optic front sight and optics cut with a Burris FastFire 3 red dot sight. Comes in its factory box with factory paperwork, original Glock barrel, cable, one backstrap, magazine, and three magazines. Must ship to FFL holder. Check local laws regarding “High Capacity” magazines BEFORE bidding. Condition: Very Good with light wear from normal handling and operation. Clean rifled bore. Barrel Length: 4.49″ Serial: TRG252 Manufacturer: GLOCK Caliber: .357 SIG Model: 31 Gen 4 Book# 02157