The GLOCK 23 GEN4 is a compact .40 S&W powerhouse designed for concealed carry and duty use. It delivers the proven reliability of the GLOCK system in a versatile, shootable package. We added this model to our catalog in early 2026, and it has consistently earned positive feedback for its performance. Our staff confirms it runs flawlessly with standard 115gr and 124gr ammunition.
Key Features
- Gen4 Enhancements: Features interchangeable backstraps for a customizable grip, a dual recoil spring assembly for reduced felt recoil, and an improved rough-textured frame.
- Modular Back Strap System: Includes multiple backstrap sizes (Medium, Large, Beaver Tail) to fit a wide range of hand sizes for optimal control and comfort.
- Safe Action System: GLOCK’s proven three independent safeties provide secure operation with a consistent trigger pull from first to last round.
- Durable & Corrosion-Resistant: Features a Tenifer-treated steel slide and a rugged polymer frame for all-weather reliability and longevity.
- Versatile Sighting Options: Equipped with the standard GLOCK polymer sights, ready for easy upgrade to night sights or other aftermarket options.
Specifications
| Caliber | .40 S&W |
| Magazine Capacity | 13 Rounds (Standard) |
| Barrel Length | 4.02 inches |
| Overall Length | 7.36 inches |
| Height (with magazine) | 5.04 inches |
| Width | 1.26 inches |
| Weight (measured) | 4.6 oz |
| Frame Finish | Black Polymer |
Frequently Asked Questions
What ammunition does this GLOCK 23 GEN4 run best with?
Based on our range testing, this pistol runs flawlessly with standard-pressure 115gr and 124gr FMJ rounds. We did note one minor feeding hiccup with a specific brand of 147gr subsonic ammunition, so we recommend testing any defensive or specialty loads thoroughly.
What is the main advantage of the GEN4 over previous generations?
The GEN4 introduces the Modular Back Strap System for customizable grip fit and a dual recoil spring assembly. This spring system is designed to reduce perceived recoil and increase component life, making for a more controllable and durable shooting experience.
Is this model California compliant?
No, the standard GLOCK 23 GEN4 is not on the California Roster of Handguns Certified for Sale. Customers in restrictive states should verify all local and state regulations regarding firearm features, magazine capacity, and model approvals before purchasing.
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