Recently, Smith & Wesson gave the old CSX a facelift with the introduction of the CSX E-Series pistols. The new E-Series guns feature a new trigger, an optic-ready slide, better ergonomics, more modular grip options, and increased capacity. I had the opportunity to review the 3.6-inch barrel model gun and was pleasantly surprised at how it shot for a micro-compact pistol. If you’re a fan of the original CSX, the new E-Series is worth upgrading to.