Glock 23 Gen 5 Review: Compact Power in .40 S&W
Introduction
The Glock 23 Gen 5 has become one of the most talked-about compact pistols in recent years, offering a perfect blend of firepower, portability, and reliability. Chambered in .40 S&W, this model has been a favorite among law enforcement officers and civilian gun owners alike.
In this comprehensive Glock 23 Gen 5 review, we’ll cover its specs, performance, upgrades compared to Gen 4, and whether it’s the right fit for you. Whether you’re a concealed carrier, a law enforcement professional, or a firearm enthusiast, the Glock 23 Gen 5 deserves serious attention.
Key Features & Specifications
The Glock 23 Gen 5 specs reflect Glock’s ongoing improvements to performance and ergonomics.
- Caliber: .40 S&W
- Action: Semi-automatic, striker-fired
- Capacity: 13+1 standard (optional higher-capacity mags available)
- Barrel Length: 4.02 inches
- Overall Length: 7.28 inches
- Height: 5.04 inches
- Width: 1.34 inches
- Weight (unloaded): 23.07 oz
- Frame: Polymer with interchangeable backstraps
- Sights: Standard Glock fixed sights (upgrade options available)
- Finish: nDLC (improved durability and corrosion resistance)
What stands out?
- Compact size: Smaller than the Glock 22 but still powerful.
- nDLC finish: Provides superior durability.
- Improved trigger: Cleaner pull than earlier models.

Performance & Accuracy
The Glock 23 Gen 5 accuracy benefits greatly from Glock’s Gen 5 barrel improvements. With the Glock Marksman Barrel (GMB), users notice:
- Tighter groupings at 15–25 yards
- Reduced felt recoil compared to earlier generations
- Consistent performance even with rapid fire
Real-world performance highlights:
- Effective defensive range: ~25 yards
- Reliable in both duty and concealed carry use
- Minimal malfunctions with proper ammunition
Compared to competitors, the Glock 23 Gen 5 delivers a balance of compact handling and the stopping power of the .40 S&W pistol.

Gen 5 Improvements
One of the biggest selling points of the Glock 23 Gen 5 is its refinements over the Gen 4 version.
Glock 23 Gen 5 vs Gen 4 – Key Differences:
- No finger grooves – Better ergonomics for all hand sizes.
- Flared magwell – Faster, smoother reloads.
- Ambidextrous slide stop – Easier use for left-handed shooters.
- nDLC finish – More resilient coating than Gen 4’s finish.
- Marksman Barrel – Significantly improved accuracy.
These upgrades make the Gen 5 a more shooter-friendly platform, appealing to professionals and enthusiasts alike.

Pros and Cons
Pros:
- Compact yet powerful with .40 S&W chambering
- Improved ergonomics and grip texture
- Excellent aftermarket support (holsters, sights, triggers)
- Enhanced accuracy with the GMB barrel
- Trusted by law enforcement worldwide
Cons:
- More recoil than 9mm counterparts
- Slightly lower magazine capacity compared to similar 9mm pistols
- Pricier than Gen 4 models on the market
Who Should Buy the Glock 23 Gen 5?
The Glock 23 Gen 5 is versatile, making it suitable for multiple user groups:
- Law enforcement professionals – Compact duty sidearm with proven stopping power.
- Concealed carriers – Balances size and firepower, though slightly larger than a Glock 19.
- Shooting enthusiasts – Reliable, accurate, and backed by massive aftermarket support.
- Collectors – A must-have in any Glock lineup, especially with Gen 5 refinements.
Comparison with Competitors
When compared to other compact pistols, the Glock 23 Gen 5 stands tall:
- Glock 19 (9mm) – Easier recoil management, higher mag capacity, but less stopping power.
- Smith & Wesson M&P40 M2.0 – Similar performance but lacks Glock’s aftermarket ecosystem.
- Sig Sauer P229 – Excellent accuracy and durability but at a much higher price point.
The Glock 23 Gen 5 remains the go-to choice for those who want a compact pistol chambered in .40 S&W with proven reliability.
Conclusion: Final Verdict
The Glock 23 Gen 5 continues Glock’s legacy of reliable, versatile pistols. Its improved ergonomics, superior barrel, and user-friendly upgrades make it one of the best compact pistols in .40 S&W available today.
If you value accuracy, durability, and proven performance, the Glock 23 Gen 5 is a firearm that deserves a spot in your collection.