The ProMag DRM-A31 (also listed as DRMA31, UPC 708279014819) is a 30-round drum magazine designed for the Smith & Wesson M&P Shield 9mm (original model and M2.0 versions).
Key Specifications
- Capacity: 30 rounds of 9mm Luger
- Construction:
- Drum housing: Proprietary DuPont Zytel-based polymer (lightweight and impact-resistant)
- Upper tower/feed lips: Full-length heat-treated steel internal insert (stamped and welded, similar to factory magazines) with overmolded stamped steel feed lips
- Follower: Injection-molded polymer
- Spring: Heat-treated chrome silicon wire or stainless steel (varies slightly by description)
- Features: Textured grip areas on the drum for handling, load-assist mechanism on some versions, and a design meant to provide a stable fit with front/rear magazine catch engagement.
- Made in: USA
- Warranty: ProMag offers a lifetime warranty against manufacturer defects.
Compatibility
It fits the standard S&W M&P Shield 9mm and Shield M2.0 9mm. It does not fit:
- S&W M&P 9mm (full-size)
- M&P Shield Plus 9mm
- Shield EZ 9mm
