The ProMag DRM-A71 Ruger P91 .40 S&W 50-Round Drum Magazine delivers extended firepower in a compact, purpose-built design. Built around a rugged DuPont Zytel polymer drum with a blue steel upper tower, this high-capacity magazine is engineered for smooth feeding and dependable performance with the Ruger P91 .40 S&W pistol.

This drum magazine is ideal for long range sessions, training days, and recreational shooting where fewer reloads keep you focused on your time behind the trigger. The textured polymer housing and integrated winding mechanism make loading intuitive, while the injection molded follower and heat-treated stainless or chrome silicon spring help maintain consistent cycling. Backed by ProMag’s reputation for durable, reliable magazines, the DRM-A71 is a practical upgrade for shooters who want more rounds on tap.

• Manufacturer: ProMag
• Model: DRM-A71
• Caliber: .40 S&W
• Capacity: 50-round drum
• Magazine Type: Drum
• Color: Black
• Fit: Ruger P91 .40 S&W pistol