ProMag Smith & Wesson SD40 .40 S&W 50-Round Polymer Drum Magazine

You haven't lived until you've mag-dumped a drum magazine, and the ProMag® Smith & Wesson® SD40™ .40 S&W 50-Round Polymer Drum Magazine is the perfect choice to show off and show out at any range. This aftermarket magazine features a body constructed with a proprietary DuPont® Zytel™ based polymer with a hybrid steel upper magazine tower that makes this magazine both strong and durable, perfect for tough use and abuse at the range. What's more, a heat-treated stainless steel spring and injection-molded polymer follower ensures smooth and reliable feeding so you can easily ring steel with every shot. Backed by a lifetime warranty from ProMag. Order yours today! Made in USA.