ProMag S&W M&P40 40S&W Drum Mag Features and Specifications:
- 50-round drum magazine
- Fits Smith & Wesson® M&P®40 .40 S&W® series pistols
- Does not fit Smith & Wesson® M&P 9mm, M&P Shield® 9mm, M&P Shield® Plus 9mm, Shield® EZ 9mm pistols
- Magazine body constructed of a proprietary DuPont® Zytel™ based polymer
- Blue steel upper magazine tower
- Injection molded magazine follower
- Magazine spring formed from heat treated stainless steel
- Made in USA
ProMag magazines are made in the USA and backed by a lifetime guarantee against manufacturer's defects. Magazine springs are precision wound using heat-treated chrome silicon wire and each and every step of the assembly process is checked and double checked in order to maintain the same consistent level of quality.
