The Glock 37 Gen 4 is a full size semi-automatic pistol engineered around the 45 GAP (Glock Auto Pistol) cartridge, offering a balance of powerful caliber performance with a frame size that remains manageable for service or range use. As part of Glock’s Gen 4 lineup, this pistol incorporates an interchangeable backstrap system and enhanced grip texture to support a secure, repeatable hold across varied hand sizes and shooting conditions.

This model features Glock’s nDLC-finished slide for increased surface durability and corrosion resistance, paired with a 4.49 inch barrel that contributes to consistent velocity and sight radius.  Standard Glock fixed sights provide a clear sight picture, and the frame accommodates an accessory light or laser via the integral rail. Original box and one magazine included.

Specifications

• Manufacturer: Glock

• Model: 37 Gen 4

• Caliber: 45 GAP

• Barrel Length: 4.49 inch

• Action: Striker fired

• Frame: Polymer with interchangeable backstraps

• Slide: Steel slide with nDLC finish

• Trigger: Glock Safe Action trigger

• Sights: Fixed sights

• Magazines: One 10-round magazine

• Overall Length: ~8.03 inch

• Weight (Unloaded): ~26.6 oz