ETS Group's 40-round 9mm magazine for the Smith and Wesson M&P, Sig P320, and HK VP9. These clear polymer magazines are made from advanced polymers that provide extreme impact resistance so they won t crack or break when dropped. Product Features Fits the Smith & Wesson 9mm M&P (does not fit the single stack S&W M&P Shield). Extended 40-round capacity Base plates interchangeable with ETS line of 9mm double stack magazines Due to the wide variety of extensions for Glock, our mag base is designed to be compatible with Glock extensions Easy disassembly with our specially designed base plate Ergonomically designed floor plate makes it easy to grab from mag pouches Lifetime Warranty Extreme Impact Resistance won't crack or break when dropped Very resistant to harsh chemicals Superior heat, cold and UV resistance won t become brittle over time even when exposed to harsh environments or extreme cold Translucent body allowing you to see your ammo count and type Creep resistant the feed lips and body won't spread when being stored long term even when fully loaded Product Specifications Manufacturer: ETS Group Model: S&W M&P (does not fit single stack S&W M&P Shield) Caliber: 9mm Magazine Capacity: 40-Rounds