The Glock 21 Gen 4 is a full-size semi-automatic pistol chambered in .45 ACP with a 4.61" barrel. It uses the Glock Safe Action system, and its trigger is listed as striker fired. Capacity is listed as 13+1 with a 13-round detachable magazine, and this unit is factory rebuilt.

The reversible magazine catch suits left- and right-handed shooters, and the Modular Back Strap system changes the grip size to fit the hand. The polymer frame has Gen4 rough texturing, and the dual recoil spring assembly is intended to extend the life of the system. The package includes three 13-round magazines, a cable lock, a hard shell case and an owner's instruction manual. The trigger pull is listed at 5.5 lb, and the pistol has a black finish.

• Brand: Glock
• Model: 21 Gen4
• Caliber: .45 ACP
• Barrel Length: 4.61"
• Capacity: 13+1 (3x 13-Round Magazines Included)
• Action: Safe Action
• Sights: Fixed
• Finish: Black