Smith & Wesson CSX-E Review: A Compact 9mm With Big Gun Flexibility

October 2, 2025
Gun Talk Staff

In the world of concealed carry pistols, it’s easy to get stuck with trade-offs. Small frame, limited capacity. Big capacity, chunky profile. But Smith & Wesson’s CSX-E is flipping that script—offering an optics-ready, hammer-fired 9mm that doesn’t skimp on capacity or shootability.

If you liked the original CSX, you’ll want to take a close look at this enhanced model. The “E” in CSX-E stands for “Enhanced,” and while the name might sound subtle, the upgrades are not.

Triggered in the Best Way

Let’s start with what you notice first—the trigger. Smith & Wesson didn’t just improve it; they completely refined the feel. It features a crisp single-action trigger with a short, defined reset, providing shooters with a fast and confident break. Being hammer-fired helps, too—it delivers the kind of predictable trigger press most striker-fired micro-compacts can’t quite match.

Red Dot Ready—and Optic Friendly

The CSX-E comes cut for optics, using the RMSC and 507K footprint, making it compatible with a variety of micro red dots. One smart detail: a clearance cut on the slide helps redirect gases away from your optic. No more smudged lenses after a long range day.

Small Gun, Big Capacity

Yes, it’s a micro-compact. But thanks to Smith & Wesson’s smart magazine design, the CSX-E offers multiple capacity options:

  • 12-round flush fit mag (13 with one in the chamber)
  • 15-round extended mag with grip sleeve
  • 17-rounder for full-size capacity in a carry-sized gun

Even better, the modular backstrap lets you swap grips depending on how you plan to use the gun. Run it small for EDC, or drop in the larger grip for training days, range use, or home defense. It’s fast, intuitive, and the swappable components all come with the gun.

Field Performance

On the range, the CSX-E proves its versatility. From 35 feet offhand, the accuracy is consistent and impressive. The extended grip and larger mags offer a full-size feel, while the compact configuration makes for a sleek, concealable package.

Whether you’re new to carrying guns or a seasoned shooter looking for a do-it-all sidearm, the CSX-E delivers. It’s modular, optic-ready, hammer-fired, and built to adapt to your needs. And yes—it’s a little bit sexy, too.

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