Glock Comparison Guide: Compare Every Glock Model Side-by-Side
Choosing the right Glock comes down to three factors: size, capacity, and intended use. With over 20 current models and six generations, the differences between a Glock 17, Glock 19, Glock 43X, and Glock 48 can be the difference between a gun you carry every day and one that stays in the safe.
This guide breaks down every major Glock comparison so you can make an informed decision. Whether you're looking for a duty pistol, a concealed carry gun, or a home defense firearm, we've compared the specs, sizes, and real-world performance of every popular Glock model.
Every Glock below is available through Gunbaze with nationwide FFL shipping from our Wyoming-based store. We've been serving shooters since 1997.
More Glock Comparisons
Choose a comparison below to see full specs, size differences, and our recommendation. Each guide is built to help you decide — not just list features.
Full Glock Model Comparison Chart
All specs below are for current production models. Data compiled from manufacturer specs and field testing. For a complete breakdown of every dimension, see our Glock Specifications page.
| Model | Caliber | Barrel | Overall Length | Weight (empty) | Capacity | Best For |
|---|---|---|---|---|---|---|
| Glock 17 | 9mm | 4.49" | 7.95" | 24.97 oz | 17+1 | Duty, home defense |
| Glock 19 | 9mm | 4.02" | 7.36" | 23.63 oz | 15+1 | All-purpose, EDC |
| Glock 19X | 9mm | 4.02" | 7.44" | 24.83 oz | 17+1 | Duty, military style |
| Glock 26 | 9mm | 3.43" | 6.42" | 21.52 oz | 10+1 | Deep concealment |
| Glock 34 | 9mm | 5.31" | 8.82" | 26.21 oz | 17+1 | Competition, range |
| Glock 43 | 9mm | 3.39" | 6.26" | 17.95 oz | 6+1 | Pocket carry |
| Glock 43X | 9mm | 3.41" | 6.50" | 18.55 oz | 10+1 | Slim concealed carry |
| Glock 48 | 9mm | 4.17" | 7.28" | 20.74 oz | 10+1 | Slim EDC, shootability |
| Glock 45 | 9mm | 4.02" | 7.44" | 22.05 oz | 17+1 | Duty, tactical |
| Glock 20 | 10mm | 4.61" | 8.07" | 27.68 oz | 15+1 | Hunting, outdoors |
| Glock 22 | .40 S&W | 4.49" | 7.95" | 25.28 oz | 15+1 | Law enforcement |
| Glock 23 | .40 S&W | 4.02" | 7.36" | 23.81 oz | 13+1 | Compact .40 carry |
| Glock 21 | .45 ACP | 4.61" | 8.07" | 26.28 oz | 13+1 | Home defense, .45 fans |
| Glock 29 | 10mm | 3.78" | 6.97" | 26.83 oz | 10+1 | Compact 10mm carry |
- Smallest / most concealable: Glock 43, Glock 43X, Glock 26
- Best all-around: Glock 19
- Best for home defense: Glock 17, Glock 45, Glock 21 (.45 ACP)
- Best for competition: Glock 34
- Best for hunting: Glock 20 (10mm), Glock 29 (compact 10mm)
How to Choose a Glock — Decision Framework
Use the framework below to narrow your choice based on how you'll actually use the gun. Every recommendation links to our shop so you can see current pricing and availability.
For Concealed Carry
Top picks: Glock 43X, Glock 48, Glock 19, Glock 26.
The Glock 43X and Glock 48 are the best slimline options — single-stack width with 10+1 capacity. The Glock 26 is the smallest double-stack 9mm Glock, ideal for deep concealment. The Glock 19 is the largest gun most people can comfortably conceal and offers 15+1 capacity.
→ Shop all Glock pistols · Best Glock for Concealed Carry guide
For Home Defense
Top picks: Glock 17, Glock 19, Glock 45, Glock 21.
Full-size and compact Glocks offer the best combination of capacity, controllability, and accessory mounting. The Glock 17 and Glock 45 both use 17-round magazines and provide a full grip for shooters of all hand sizes. For .45 ACP fans, the Glock 21 delivers soft-shooting recoil thanks to its progressive recoil spring.
For Duty / Open Carry
Top picks: Glock 17, Glock 45, Glock 34.
Duty use favors full-size frames, long sight radius, and high capacity. The Glock 34 (long slide) is a popular choice for competition and precision shooting.
For Competition
Top picks: Glock 34, Glock 17L, Glock 35 (.40 S&W).
The Glock 34 offers a 5.31" barrel, adjustable sights, and a lighter trigger connector — a factory-ready competition pistol.
For Hunting / Outdoors
Top picks: Glock 20 (10mm), Glock 29 (compact 10mm).
The 10mm Auto cartridge delivers the stopping power needed for hunting and bear country. The Glock 20 is the most popular 10mm handgun in North America. The Glock 29 offers the same power in a more concealable package.
Glock Generations Explained
Glock has released six generations of pistols since 1982. Each generation introduced improvements in ergonomics, trigger feel, and modularity. For the full breakdown with photos and history, read our complete Glock Generations guide.
| Generation | Years | Key Changes |
|---|---|---|
| Gen 1 | 1982–1988 | Original Glock 17, polymer frame |
| Gen 2 | 1988–1997 | Checkered grips, textured frame |
| Gen 2.5 | 1996–1998 | Transitional hybrid |
| Gen 3 | 1998–2010 | Accessory rail, finger grooves, thumb rest |
| Gen 4 | 2010–2017 | Modular backstraps, reversible mag release, dual recoil spring |
| Gen 5 | 2017–2025 | Marksman barrel, no finger grooves, ambi slide stop, nDLC finish |
| Gen 6 | 2025–present | Modular optic system, flat trigger, enhanced texture, RTF 6 |
Most popular generation today: Gen 5 — it offers the best trigger, barrel accuracy, and finish of any Glock to date. Gen 6 is rolling out through 2026 with a flat-faced trigger and new optic mounting system. Read the full generation guide →
Glock vs Competitors
Glock isn't the only striker-fired pistol on the market. Here's how it stacks up against the most common alternatives.
Glock vs SIG Sauer
The SIG P365 and P320 are Glock's biggest competitors. SIG offers more modularity (P320) and higher capacity in a smaller package (P365). Glock wins on aftermarket support, reliability track record, and magazine compatibility.
Glock vs Smith & Wesson M&P
The M&P 2.0 series offers better stock ergonomics and a crisper trigger out of the box. Glock wins on parts availability, holster options, and long-term durability.
Glock vs Springfield Armory
The Springfield Hellcat and XD series compete directly with the Glock 43X and 19. Springfield often wins on capacity (Hellcat: 11+1 vs 43X: 10+1). Glock wins on track record and aftermarket support.
Frequently Asked Questions
What's the difference between Glock 17 and Glock 19?
The Glock 17 is a full-size pistol with a 4.49" barrel and 17+1 capacity. The Glock 19 is a compact pistol with a 4.02" barrel and 15+1 capacity. The G19 is easier to conceal; the G17 offers slightly better control and capacity. For a full breakdown, read our Glock 19 vs 17 comparison.
Which Glock is best for concealed carry?
The Glock 43X and Glock 48 are the best slimline options. The Glock 19 is the best all-around concealed carry Glock if you can dress around it. The Glock 26 is the smallest double-stack option. See our Best Glock for Concealed Carry guide.
Is Glock 19 or Glock 43X better?
The Glock 19 offers 15+1 capacity and better shootability. The Glock 43X is thinner, lighter, and easier to conceal with 10+1 capacity. Choose the 19 for all-purpose use, the 43X for dedicated concealed carry. Read the full comparison →
What's the most popular Glock model?
The Glock 19 is the most popular Glock model worldwide. It's used by law enforcement, military, and civilians for its balance of size, capacity, and shootability.
What caliber is best for a first Glock?
9mm is the best caliber for a first Glock. It offers manageable recoil, affordable practice ammo, and proven defensive performance.
Can I buy a Glock online?
Yes. Gunbaze ships Glock pistols to FFL dealers nationwide. Place your order online, select a local FFL dealer at checkout, and pick up your Glock after the background check. Read our FAQ →
How long does shipping take?
Transit times average 2–3 business days for the East Coast, 3–4 days for Central US, 4–5 days for the West Coast, and 5–7 days for Alaska and Hawaii. See our full shipping guide for details.
What's the difference between Gen 5 and Gen 6 Glock?
Gen 5 introduced the Marksman barrel, removed finger grooves, and added an nDLC finish. Gen 6 builds on that with a flat-faced trigger, a new modular optic system, and updated RTF 6 grip texture. Read our full generations guide.
Ready to Buy? Shop Glocks at Gunbaze
Every Glock on this page is available through Gunbaze with fast shipping to your local FFL dealer. We're a Wyoming-based Glock dealer serving customers nationwide since 1997.
- ✅ Gen 5 and Gen 6 models in stock
- ✅ 9mm, .40 S&W, 10mm, and .45 ACP
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