This ProMag drum magazine (mfr. part no. DRM-A102) holds 50 rounds of .40 S&W and is built for the Smith & Wesson SD40 pistol.

Key Specifications

• Holds 50 rounds of .40 S&W.
• Fits the Smith & Wesson SD40 pistol.
• Magazine body constructed of a proprietary DuPont Zytel-based polymer.
• Features a hybrid steel upper magazine tower.
• Uses an injection-molded magazine follower.
• Spring formed from heat-treated stainless steel wire.
• Weighs approximately 1.75 lb.
• Drum-style design increases capacity well beyond the factory magazine.
• Manufactured by ProMag.

Frequently Asked Questions

Will this drum fit other S&W SD models?

ProMag lists this drum specifically for the SD40; verify caliber and model before ordering.

What is the magazine body made of?

A proprietary DuPont Zytel-based polymer with a hybrid steel upper tower.

Buy the ProMag S&W SD40 50-Round Drum Magazine

Shop the ProMag lineup or browse our full Handgun Magazines selection to find the right fit for your firearm.