Need extra rounds for your Smith & Wesson Shield in .40 S&W? This ProMag SMI31 magazine is just what you're looking for! It holds 9 rounds in a sturdy steel construction with a classic blued finish, giving you reliable feeding and a solid feel. Whether you're at the range, carrying for personal defense, or just want a spare mag, this one fits the bill. It's brand new in its original packaging, so you know it's never been used or loaded. Perfect for range days or as a backup – you can never have too many magazines. The design matches the Shield's profile, so it won't snag and slides in smoothly. Easy to load and disassemble for cleaning. UPC 0708279012082 confirms it's a genuine ProMag product. Keep your Shield ready for action with this affordable, quality magazine. Grab one (or a few) and stay loaded!