Glock G37 Gen 3 .45 GAP Full-Size Pistol, Austrian-Made, 4.49 in Barrel, 10+1 Capacity, Discontinued Model
The Glock G37 Gen 3 is a full-size, Austrian-made semi-auto chambered in .45 GAP, notable as the first Glock to debut this cartridge. This discontinued model features a 4.49 in barrel, the Safe Action system, and matching serial numbers on the slide, barrel, and frame. It includes factory fixed sights and a single-slot Glock accessory rail, offering a solid, purpose-built configuration for the .45 GAP platform.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Well-defined polygonal rifling.
Specific Condition Notes: This firearm is in great shape. There are minor, superficial scratches and blemishes present. The bore is clean and shiny.
What’s Included
- Glock factory hard case
- Glock factory user manual
- 2 Glock factory 10-round magazines marked '.45 G.A.P.'
This G37 is built around Glock's Gen 3 frame with finger grooves and pebble texturing for a secure grip. The slide carries rear serrations for confident manipulation, and the frame includes a single-slot Glock accessory rail. The pistol retains fixed polymer sights with a white-dot front and white-outline rear.
The 4.49 in steel barrel is cold-hammer-forged with polygonal rifling, optimized for the .45 GAP chambering. Capacity is 10+1, and the left-side magazine release supports straightforward reloads.
Safety is handled by Glock's Safe Action system with three passive safeties and a trigger safety tab. The G37 was the first Glock model to introduce the .45 GAP cartridge, and this example reflects that original configuration in a full-size package.
Origin and markings are clear and correct: MADE IN AUSTRIA with GLOCK, INC., SMYRNA, GA import marks and 'GLOCK 37 AUSTRIA 45 G.A.P.' on the slide. The slide, barrel, and frame carry matching serial numbers.




