This is a factory Smith & Wesson M&P9, M&P9 M2.0 9mm 17 Round Magazine

If you’re running a Smith & Wesson M&P, these 17-round magazines will ensure your rounds are ready to go with every trigger pull.  The stainless steel body features a corrosion-resistant finish and a high-strength polymer floor plate. Inside, the steel spring and anti-tilt polymer follower work together to provide smooth and reliable feeding.  On each side of the magazine, you’ll find numbered witness holes to ensure you never lose count of your remaining rounds. Once your magazine is empty, the white follower gives you a clear indication.  Whether you’re using your M&P9 for home defense, concealed carry, or training to sharpen your skills, this 17-round magazine will allow you to do so without a single worry.