Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms and accessories. The Glock 33 Gen4 357 Sig 9-Round Pistol is a compact, reliable firearm chambered in .357 Sig, offering significant stopping power in a small package. Its Gen4 design includes interchangeable backstraps for a custom grip. Available for $499.00.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
What are the specifications of the Glock 33 Gen4?
| Product Type | Semi-Automatic Pistol |
|---|---|
| Material | Polymer Frame, Steel Slide |
| Manufacturing | Glock, Austria |
| Finish | Matte Black, nDLC (slide) |
| Hardness/Quality | Glock factory standard; known for durability |
| Compatibility | Glock .357 Sig magazines, various Glock accessories |
| Installation/Usage | Standard firearm operation; requires proper training |
| Weight (unloaded) | Approx. 23.99 oz (680 g) |
| Dimensions (Overall Length) | Approx. 6.50 in (165 mm) |
| Country of Origin | Austria |
| Condition | New |
| SKU | G33G4-357SIG |
| Caliber | .357 Sig |
| Capacity | 9 Rounds |
| Barrel Length | 3.43 inches |
| Sights | Fixed Glock Sights |
What are the key features of the Glock 33 Gen4 .357 Sig?
The Glock 33 Gen4 in .357 Sig is a sub-compact pistol designed for concealed carry and personal defense. Its compact size makes it easy to conceal, while the .357 Sig cartridge delivers impressive ballistics, often compared to .357 Magnum revolver performance in a semi-auto platform. The Gen4 iteration includes several user-friendly enhancements. The modular backstrap system allows shooters to customize the grip to their hand size, improving comfort and control. The rough textured frame (RTF) provides a more secure grip, especially under adverse conditions or when hands are wet. Additionally, the reversible magazine catch accommodates both left and right-handed shooters, adding to its versatility. This glock g33 gen4 357 sig sub compact 9 round pistol also features Glock’s familiar safe action system, with three independent safeties that disengage sequentially as the trigger is pulled and re-engage automatically when the trigger is released. This design contributes to its reputation for safety and reliability.
Who should consider the Glock 33 Gen4?
Buy it if:
- You prioritize stopping power in a compact package. The .357 Sig round is known for its velocity and energy.
- You need a reliable, easily concealable firearm for personal defense or as a backup gun.
- You appreciate the modularity of the Gen4 backstrap system for a customized grip.
- You are already familiar with the Glock platform and prefer its consistent trigger pull and operation.
- You are looking for a durable, low-maintenance pistol suitable for regular carry.
Skip it if:
- You are sensitive to recoil; the .357 Sig round can be snappy in a sub-compact frame. Consider a 9mm alternative like a Glock 26 Gen4 if recoil is a concern.
- You prefer a larger capacity; while 9 rounds is respectable for its size, some may prefer higher capacity options. See our full-size handguns for more options.
- You are on a very tight budget; .357 Sig ammunition can be more expensive and less common than 9mm or .40 S&W.
- You are new to firearms and prefer a simpler, less powerful cartridge for initial training.
What are the pros and cons of the Glock 33 Gen4?
✅ Pros:
- ✅ Significant Stopping Power: The .357 Sig cartridge offers excellent ballistics for its size.
- ✅ Compact and Concealable: Ideal for concealed carry without sacrificing performance.
- ✅ Glock Reliability: Known for being a robust and dependable firearm.
- ✅ Modular Grip: Interchangeable backstraps allow for a custom fit to various hand sizes.
- ✅ Rough Textured Frame: Provides a secure grip even in challenging conditions.
- ✅ Ambidextrous Magazine Release: Accommodates both left and right-handed shooters.
❌ Cons:
- ❌ Recoil: The .357 Sig in a sub-compact can have noticeable recoil, which might be a deterrent for some shooters. For a softer shooting experience, consider a 9mm pistol.
- ❌ Ammunition Cost/Availability: .357 Sig ammo can be pricier and harder to find than more common calibers like 9mm.
- ❌ Capacity: While 9 rounds is decent for a sub-compact, it’s less than some larger pistols.
How does the Glock 33 Gen4 compare to similar pistols?
| Feature | Glock 33 Gen4 (.357 Sig) | Taurus G3C (9mm) | Sig Sauer P365XL (9mm) |
|---|---|---|---|
| Material | Polymer Frame, Steel Slide | Polymer Frame, Alloy Steel Slide | Polymer Frame, Stainless Steel Slide |
| Quality | High, Duty-grade, Proven Reliability | Medium, Good Value | High, Premium Fit and Finish |
| Compatibility | Glock .357 Sig mags, specific accessories | Taurus G-series mags, some universal accessories | Sig P365 series mags, specific accessories |
| Shipping | Ships from Wichita, KS (FFL required) | Varies by retailer (FFL required) | Varies by retailer (FFL required) |
| Lifespan/Durability | Excellent, designed for long-term use | Good, suitable for regular use | Excellent, designed for extensive use |
| Price | $499.00 | ~$250-300 | ~$650-750 |
Frequently Asked Questions about the Glock 33 Gen4
What is the main advantage of the .357 Sig cartridge?
The .357 Sig cartridge is known for its high velocity and flat trajectory, offering ballistic performance similar to a .357 Magnum revolver round but in a semi-automatic pistol platform. This translates to significant energy transfer and stopping power.
Is the Glock 33 Gen4 suitable for concealed carry?
Yes, the Glock 33 Gen4 is specifically designed as a sub-compact pistol, making it an excellent choice for concealed carry. Its small size and 9-round capacity strike a good balance for personal defense without being overly bulky.
Can I convert a Glock 33 Gen4 to another caliber?
While the Glock 33 Gen4 is chambered in .357 Sig, it is possible to convert it to .40 S&W by simply swapping the barrel and using .40 S&W magazines. Some aftermarket barrels also allow conversion to 9mm, but this often requires a different extractor and sometimes a different ejector for reliable function.
What kind of recoil should I expect from a Glock 33 Gen4?
Given its sub-compact size and the powerful .357 Sig cartridge, the Glock 33 Gen4 will have a snappier recoil impulse compared to larger pistols or those chambered in 9mm. Shooters should practice to manage this recoil effectively.
Does the Glock 33 Gen4 come with interchangeable backstraps?
Yes, as a Gen4 model, the Glock 33 includes a modular backstrap system with various sizes. This allows users to customize the grip to better fit their hand, improving comfort and control.
Where can I buy a Glock 33 Gen4 357 Sig 9-round pistol online?
You can purchase the Glock 33 Gen4 357 Sig 9-round pistol directly from Kansas Gunshop (kansas-gunshop.com). We are a licensed FFL dealer and will ship to your local FFL for transfer.
What is the capacity of the Glock 33 Gen4?
The Glock 33 Gen4 in .357 Sig typically comes with a standard magazine capacity of 9 rounds, plus one in the chamber for a total of 10 rounds.
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About this review: As the owner of Kansas Gunshop and an FFL holder since 2008, I’ve handled countless firearms, including many Glock models. My goal is to provide practical, compliance-aware insights from the perspective of a small Kansas FFL dealer who understands the needs of serious gun owners and the local hunting seasons. This review reflects my personal experience and understanding of the product and its place in the market.
Last updated: April 2026
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