The Smith & Wesson CSX E-Series is the next evolution in the CSX line, built as an optic-ready micro-compact 9mm that balances deep-concealment carry and confident range performance; its newly enhanced E-Series trigger offers a light, straight-to-the-rear pull with a clean break and improved reset that aids accuracy on fast follow-up shots, while the modular grip adapter converts between micro-compact and compact footprints so you can size the pistol down for concealment or up for control during defensive drills and extended shooting sessions. The 3.1" stainless barrel with 1:10 twist and Armornite finish pairs with a stainless slide and ClearSight cut over a modified RMS-C/507K optic footprint to divert gasses from your optic lens, making it ready for red dot upgrades, and the white dot sights provide a solid backup sight picture. Constructed on an aluminum alloy frame with extensive grip texture, interchangeable backstraps and an ambidextrous thumb safety, the CSX E-Series suits concealed carriers, off-duty professionals and range users who want a compact semi-auto with the handling of a larger pistol; FFL transfer is required for purchase.