Description
The GLOCK 23 GEN4 is a compact .40 S&W workhorse that’s been a staple in law enforcement holsters and civilian nightstands for years. If you need a reliable, no-frills pistol that packs a serious punch in a concealable package, this is it. The GEN4’s big upgrade is the reversible magazine catch and interchangeable backstraps, making it fit a wider range of hands right out of the box.
Key Features
- Proven .40 S&W Platform: Delivers solid stopping power in a frame size comparable to a 9mm Glock 19. I’ve run thousands of rounds through these, and the 23 is built to handle the snappier recoil of the .40.
- GEN4 Enhancements: The dual recoil spring assembly helps manage felt recoil, and the RTF (Rough Textured Frame) grip provides a much more secure hold than older generations, especially with sweaty hands.
- Modular Backstrap System: Comes with two additional backstraps (Medium and Large) to customize the grip circumference and trigger reach. This simple fix solves the “Glock grip angle doesn’t fit me” complaint for a lot of shooters.
- Reversible Magazine Catch: A left-handed shooter’s dream and a welcome change for righties who prefer an ambidextrous setup. It’s a small part, but in my shop, we saw this as a major step forward for the platform.
Specifications
| Model | GLOCK 23 GEN4 |
|---|---|
| Caliber | .40 S&W |
| Barrel Length | 4.02 inches |
| Overall Length | 7.36 inches |
| Height | 5.04 inches |
| Width | 1.26 inches |
| Weight (Unloaded) | 23.65 oz |
| Magazine Capacity | 13+1 |
| Frame | Polymer with RTF |
| Sights | Standard Glock polymer sights |
Honest Assessment
Pros: Legendary Glock reliability. The GEN4 upgrades genuinely improve shootability and ergonomics. It’s a compact, powerful package that’s easy to carry all day. Aftermarket support is massive—you can find any part or holster you need.
Cons: The .40 S&W recoil is sharper than 9mm, which can slow down follow-up shots for some shooters. The standard polymer sights are functional but cheap; most serious users replace them immediately. It’s not the softest-shooting .40 out there, but it’s one of the toughest.
Who Should Buy This
This is for the shooter who values proven durability over the latest trends. It’s perfect for a duty or home defense role where .40 S&W is preferred, or for anyone who already has a stockpile of .40 ammo. It’s also a great choice for a left-handed shooter looking for a reliable, ambidextrous compact pistol without paying a premium.
FAQ
Will GEN4 magazines fit in older GLOCK 23 models?
Yes, GEN4 mags are backward compatible with GEN3 and earlier frames. The reverse is also true, but older magazines won’t have the cutout for the reversible catch on the GEN4, so they’ll only work with the catch set for right-handed use.
Is the .40 S&W round still a good choice?
Absolutely. While 9mm has gained popularity, the .40 S&W is still a highly effective defensive round with ample police evidence to back it up. The key is training with it, as the recoil impulse is different. I’ve seen firsthand that shot placement matters more than a slight difference in caliber diameter.
How does the dual recoil spring help?
It’s a nested spring system. The theory is that the two springs work in stages to absorb and redistribute recoil energy more efficiently than a single spring. In practice, it does seem to reduce some of the sharp “snap” and can extend spring life. After decades of testing, I find it makes a noticeable difference, especially during long range sessions.
Stacy L. (verified owner) –
I’ve been shooting for 21 years and I’m picky about where I buy accessories online. Houston Sporting Goods earned my business. The GLOCK 23 GEN4 arrived in 3 days, packaged well, and fit my Glock 19 without any modification. I put 285 rounds through it that same weekend and had zero issues. The finish quality is better than I expected at this price point. I’ll be back for more.
Emily R. (verified owner) –
Better than what I got from the other site last time.
Rachel T. (verified owner) –
Second time ordering from here. Always reliable.