Shop › PROMAG S&W SHIELD PLUS 9MM DRM 50RD PROMAG S&W SHIELD PLUS 9MM DRM 50RD $114.99 ProMag Industries Magazine, 9MM, 50 Round Drum, Fits S&W Shield Plus, Polymer, Black DRM-A77 Quantity: Add To Cart Added! ProMag Industries Magazine, 9MM, 50 Round Drum, Fits S&W Shield Plus, Polymer, Black DRM-A77