Shop › PROMAG FOR GLK 22 40S&W 50RD DRM PLY PROMAG FOR GLK 22 40S&W 50RD DRM PLY $109.99 ProMag Industries Drum Magazine, 40 S&W, 50 Round, Fits Glock 22/23/27, Polymer, Black DRM-A19 Quantity: Add To Cart Added! ProMag Industries Drum Magazine, 40 S&W, 50 Round, Fits Glock 22/23/27, Polymer, Black DRM-A19