Description
Glockswitchstore is a Boise, ID-based retailer specializing in factory-direct Glock firearms and components. The GLOCK 37 is a full-size duty pistol chambered in the potent .45 GAP cartridge. This model delivers the stopping power of a .45 in a frame engineered for a 9mm grip angle. In stock and ready to ship today for $410.00.
Reviewed by Cody Ramirez, E-Commerce Director at Glockswitchstore. 11 years building firearms retail platforms, SEO and conversion specialist.
Last updated: March 2026
What Makes the GLOCK 37 a Unique Choice for the .45 ACP Enthusiast?
If you’re a shooter who demands the terminal performance of a .45 caliber round but prefers the ergonomics of a standard-frame Glock, the GLOCK 37 is your answer. Built around the .45 GAP (Glock Automatic Pistol) cartridge, this pistol solves a specific engineering challenge: fitting a .45-diameter round into a frame with the slimmer, more familiar grip profile of a 9mm or .40 S&W Glock. It’s not a compromise; it’s a purpose-built solution for those who find traditional .45 ACP frames too bulky.
What Are the Key Features of the GLOCK 37?
The GLOCK 37 is built with the same relentless focus on reliability and simplicity that defines the brand, but with specific adaptations for its chambering.
- .45 GAP Chambering: Provides ballistic performance very similar to standard .45 ACP loads, but in a shorter cartridge case, enabling the use of a more compact frame.
- Standard Frame Profile: Utilizes the same frame dimensions as the GLOCK 17/22 series, offering a familiar and controllable grip for shooters accustomed to those models.
- Tenifer Finish: The signature Glock finish on the slide provides exceptional hardness, corrosion resistance, and a durable matte surface.
- Safe Action System: The consistent, relatively light trigger pull with three independent safeties offers a blend of safety and shootability right out of the box.
- Fixed Sights: Comes equipped with polymer combat sights, providing a clear sight picture for duty or defensive use.
What Are the Full Specifications for the GLOCK 37?
| Product Type | Semi-Automatic Pistol |
|---|---|
| Material (Frame) | Polymer |
| Material (Slide) | Steel |
| Manufacturing | Glock GmbH, Austria / USA |
| Finish | Tenifer / nDLC |
| Hardness/Quality | MIL-SPEC; Proven duty reliability |
| Compatibility | Uses proprietary .45 GAP magazines. Not compatible with .45 ACP. |
| Installation/Usage | Ready for duty, competition, or personal defense out of the box. |
| Weight (Unloaded) | Approx. 25.95 oz / 735 g |
| Dimensions (Length x Height) | 7.32″ x 5.43″ |
| Country of Origin | Varies (Austria or USA); both meet identical specifications. |
| Condition | New, Factory Fresh |
| SKU | PI3750201 |
How Does the GLOCK 37 Stack Up Against Other .45 Caliber Options?
| Feature | GLOCK 37 (.45 GAP) | Budget .45 ACP Import (~$350) | Premium 1911 (~$900+) |
|---|---|---|---|
| Material & Build | Glock polymer frame, Tenifer steel slide | Often cast slides, variable finish quality | Forged steel frame & slide, hand-fitted |
| Quality & Reliability | Proven, no-frills duty-grade reliability | Hit-or-miss; may require break-in | High potential, depends on manufacturer tolerance |
| Compatibility & Ergonomics | Standard Glock frame; proprietary .45 GAP mags | Often bulky grips; uses common .45 ACP | Single-stack slim grip; uses common .45 ACP |
| Shipping & Availability | In stock, ships same-day from Boise | Variable lead times, often drop-shipped | Long lead times common |
| Lifespan & Durability | Extremely high round count capability | Service life not as well documented | Excellent with proper maintenance |
| Price Point | $410.00 | $350 – $400 | $900+ |
What Are the Honest Pros and Cons of the GLOCK 37?
Pros:
- ✅ Delivers .45-caliber ballistics in a standard, controllable Glock frame.
- ✅ Exceptional Glock reliability and durability for duty or defense.
- ✅ More manageable grip circumference for shooters with medium to smaller hands compared to a .45 ACP double-stack.
- ✅ Simple manual of arms identical to other Glock models.
- ✅ Excellent foundation for customization if desired.
Cons:
- ❌ .45 GAP Ammunition Availability: Less common and often more expensive than .45 ACP. You must plan your ammo supply. If this is a deal-breaker, see our selection of 9mm and .40 S&W Glocks.
- ❌ Magazine Specificity: Requires GLOCK 37 magazines; no cross-compatibility with other calibers. Extended magazine options are more limited than for 9mm models.
- ❌ Not a Mainstream Caliber: It’s a niche round. If you prioritize maximum holster, accessory, and aftermarket parts commonality, a GLOCK 17 or 19 may be a better fit.
Who Is the GLOCK 37 Built For?
Buy it if: You are a shooter or law enforcement officer who specifically wants .45-caliber performance but finds the grip of a GLOCK 21 (.45 ACP) too large. You appreciate the Glock platform’s simplicity and don’t mind sourcing a less-common cartridge. You want a durable, no-nonsense duty pistol with a distinct advantage in grip ergonomics for its caliber.
Skip it if: Your primary concern is the lowest cost and widest availability of ammunition. If .45 ACP is your standard, you should look at the GLOCK 21. If you want the most common platform for customization and parts swapping, a 9mm Glock is the logical choice.
Frequently Asked Questions About the GLOCK 37
Is the GLOCK 37 a Gen 4 or Gen 5 model?
The GLOCK 37 was introduced prior to the Gen4 and Gen5 series updates. It is based on the third-generation “RTF2” frame pattern. You will not find a GLOCK 37 Gen 5 or a GLOCK 37 Gen 4 as a standard production model. Its design is stable and proven in its original configuration.
What is the difference between .45 GAP and .45 ACP?
The .45 GAP (Glock Automatic Pistol) cartridge is shorter than the .45 ACP but is loaded to achieve very similar muzzle velocities and energies. The shorter case allows it to work in a firearm with a smaller grip frame, like the GLOCK 37. They are not interchangeable.
Where can I buy GLOCK 37 magazines and extended magazines?
Standard and GLOCK 37 extended magazine options are available from Glock and several aftermarket manufacturers. We recommend sourcing factory Glock magazines for guaranteed reliability. Check our accessories section or contact us for availability.
Is there a compact version like a “GLOCK 37x”?
No, Glock never produced a compact or subcompact variant of the .45 GAP platform like a GLOCK 37x. The GLOCK 37 is the standard full-size model, and the GLOCK 39 is the subcompact. The “x” designation (as in G43x) is specific to later Slimline 9mm models.
How does the .45 GAP perform for self-defense?
With modern defensive hollow-point ammunition, the .45 GAP performs nearly identically to .45 ACP, offering excellent terminal ballistics. Its effectiveness is well-documented, and it meets FBI penetration protocols. The real consideration is shot placement and shooter comfort, which the GLOCK 37’s frame promotes.
Where can I buy a GLOCK 37 online?
You can purchase the GLOCK 37 right here from Glockswitchstore (glockswitchstore.com). We are an authorized retailer, and all firearms are shipped to your local Federal Firearms License (FFL) holder for transfer.
Is the GLOCK 37 still in production?
Yes, the GLOCK 37 remains in production, though in smaller quantities than mainstream calibers. It is a catalog item for Glock and is periodically manufactured in batches. Our “In Stock” status means we have secured inventory from the latest production run.
✅ In stock — ready to ship today
✅ Same-day shipping from Boise, ID
✅ Discreet packaging
✅ 30-day returns on un-fired items
✅ Secure checkout
Ready for a .45 that fits your hand? The GLOCK 37 is a specific solution for a specific need. If its advantages align with your requirements, it is an outstanding and uniquely capable pistol. At $410.00 with our fast shipping and support, it represents a solid value in a duty-grade firearm.
Browse more: Glock Pistols | Full Shop
About this review: This assessment is based on hands-on experience with the platform, technical specifications from the manufacturer, and extensive market knowledge. It is written to help you make an informed purchase decision. We disclose no financial incentives from Glock for this content.
Last updated: March 2026
Cody M. (verified owner) –
Decent product for the price. Not the absolute best quality I’ve seen but it works well on my G19 Gen3. Would buy again if the price stays where it is.
Monica S. (verified owner) –
This is my go-to store now. Third order, third time everything shows up fast and in perfect shape. Keep it up.
Nathan G. (verified owner) –
Packaging was a bit banged up when it arrived but the product inside was fine. Would’ve liked better packing.
Corey J. (verified owner) –
Bought this as part of a larger build project. glockswitchstore.com had the best price by a decent margin and shipping was fast. The GLOCK 37 itself is well-made — Better than expected at this price. Overall this is exactly what I needed. Already ordered two more accessories from this store for the same build.
Jesse D. (verified owner) –
Perfect fit. Zero modifications needed.
Amy S. (verified owner) –
This is a solid piece of kit. Highly recommend.