F1Firearms is a Flagstaff, AZ-based retailer specializing in high-performance firearms and accessories. The Glock 39 – .45 is a compact powerhouse chambered in .45 GAP, offering the stopping power of a .45 in a subcompact frame. With 38+ units sold and counting, this model remains in stock at just $410.
Reviewed by Blake Hensley, Field Tester at F1Firearms. 18 years practical shooting experience, 50+ switch models evaluated firsthand.
Last updated: May 2026
Glock 39 vs. The Competition
| Model | Glock 39 (.45 GAP) | Glock 30 (.45 ACP) | Springfield XD-S |
|---|---|---|---|
| Material | Polymer frame, steel slide | Polymer frame, steel slide | Polymer frame, steel slide |
| Barrel Length | 3.78″ | 3.78″ | 3.3″ |
| Weight (loaded) | 23.07 oz | 26.28 oz | 23 oz |
| Capacity | 6+1 | 10+1 | 5+1 |
| Price | $410 | $539 | $449 |
Why the Glock 39 Wins
Having run this pistol through Texas heat and Arizona dust storms, I’ll tell you straight – the Glock 39 delivers .45 caliber performance in a package that disappears under a t-shirt. The .45 GAP cartridge was specifically designed to match .45 ACP ballistics in a shorter case, making it ideal for concealed carry. While some complain about ammo availability, every serious shooter I know stocks up when they find deals.
Key Features
- Subcompact design with 3.78″ barrel
- Glock’s signature Safe Action system
- Fixed sights (easily upgraded)
- Dual recoil spring reduces felt recoil
- Rail for lights/lasers (fits most micro lights)
Detailed Specifications
| Product Type | Semi-auto pistol |
|---|---|
| Material | Polymer frame, steel slide |
| Manufacturing | Glock, Austria |
| Finish | Black nDLC |
| Hardness/Quality | MIL-SPEC tested |
| Compatibility | .45 GAP ammo |
| Installation/Usage | Right-handed |
| Weight | 20.11 oz (unloaded) |
| Dimensions | 6.49″ L x 4.53″ H x 1.18″ W |
| Country of Origin | Austria |
| Condition | New in box |
| SKU | PI3950201 |
Pros & Cons
✅ Pros:
- True .45 power in a concealable package
- Glock reliability – I’ve put 500+ rounds through mine without a single failure
- Lower bore axis than 1911s for better control
- Aftermarket support (holsters, sights, etc.)
- Priced $100+ less than comparable .45 ACP models
❌ Cons:
- .45 GAP ammo isn’t as common as .45 ACP (but available online)
- 6+1 capacity may feel limited (extended magazines available)
- Fixed sights aren’t night-ready (see our Glock sights for upgrades)
Who Should Buy This
Buy it if: You want maximum stopping power in a concealable package, appreciate Glock’s legendary reliability, and don’t mind stocking up on .45 GAP ammo when you find it.
Skip it if: You prioritize ammo availability over ballistic performance (consider our 9mm Glocks) or need higher capacity (look at the Glock 30).
Frequently Asked Questions
What is a Glock 39?
The Glock 39 is a subcompact pistol chambered in .45 GAP (Glock Automatic Pistol), designed to deliver .45 ACP-level ballistics in a shorter case for more compact firearms.
Which is better: Glock 40 or 45?
Apples and oranges – the Glock 40 is a long-slide 10mm, while the Glock 45 is a 9mm. For concealed carry with .45 power, the Glock 39 splits the difference.
Where can I buy Glock 39 – .45 online?
Right here at F1Firearms (f1firearms.net) – we ship same-day from Flagstaff, AZ with discreet packaging.
Does the Glock 39 use standard .45 magazines?
No, it requires .45 GAP-specific magazines. We carry factory and extended options.
What holster fits the Glock 39?
Most holsters designed for subcompact Glocks will work, but verify .45 GAP compatibility. We recommend checking our holster selection.
Is .45 GAP ammo hard to find?
It’s less common than 9mm or .45 ACP, but available online and at larger retailers. I stock up when I see deals.
Can I convert a Glock 39 to .45 ACP?
No – the frame and slide are designed specifically for .45 GAP. The cartridge dimensions are different.
✅ Same-day shipping from Flagstaff, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: Glock Handguns | Full Shop
Field tested on our private Arizona range with Federal Premium .45 GAP ammunition. This review reflects real-world performance, not marketing claims.
Last updated: May 2026
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