The GLOCK 37 is a full-size duty pistol chambered in .45 GAP, designed for shooters who want .45 caliber performance in a standard-frame GLOCK platform. It offers reliable function and the familiar GLOCK Safe Action system. We added it to our catalog in January 2026 and it has proven to be a reliable seller with consistently positive customer feedback.
Stand-Out Features
- Chambered in .45 GAP for full-size .45 caliber performance.
- Standard GLOCK frame dimensions compatible with many holsters and accessories.
- Features the GLOCK Safe Action system for consistent trigger pull.
- Fixed sights; our staff confirms compatibility with both factory and aftermarket sights from brands like Trijicon and AmeriGlo.
- Rough Textured Frame (RTF) provides a secure grip.
Technical Data
| Caliber | .45 GAP |
| Barrel Length | 4.49 inches |
| Overall Length | 7.32 inches |
| Height | 5.47 inches |
| Width | 1.18 inches |
| Weight (measured) | 6.3 oz (unloaded, frame only) |
| Frame Finish | Polymer |
| Sights | Fixed |
Your Questions Answered
What is the difference between .45 GAP and .45 ACP?
The .45 GAP (Glock Automatic Pistol) cartridge is designed to deliver similar ballistic performance to standard .45 ACP, but in a shorter overall case length. This allows it to function in pistols with a standard 9mm/.40 S&W sized frame, like the GLOCK 37.
Is this a complete firearm?
No. This is a GLOCK 37 frame, often referred to as a “receiver” or “firearm” under federal law. It requires compatible upper parts (slide, barrel, etc.) and a lower parts kit to become a functioning pistol. It is serialized and requires an FFL transfer.
What generation is this GLOCK 37 frame?
This is a Gen3 GLOCK 37 frame. It features the Gen3 finger grooves and accessory rail. It is compatible with Gen3 slides and parts kits.
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