The ProMag DRM-A74 Sig Sauer P229 .40 S&W 50-Round Black Polymer Drum Magazine is built for shooters who want maximum capacity in a compact, purpose-driven design. Its DuPont Zytel based polymer body keeps weight manageable, while the blue steel upper tower interfaces cleanly with Sig Sauer P229 .40 S&W pistols for secure, reliable seating and smooth operation.

This 50-round drum is well suited for extended range sessions, high-volume training, and practice where minimizing reloads helps you stay focused on fundamentals. The injection molded follower and heat-treated stainless steel spring are engineered to deliver consistent feeding from the first round to the last, supporting dependable performance over repeated use. Backed by ProMag’s long-standing experience in magazine manufacturing, this drum magazine reflects careful attention to function, durability, and shooter-friendly design.

• Manufacturer: ProMag
• Model: Sig Sauer P229 .40 S&W 50-Round Drum Magazine (DRM-A74)
• Caliber: .40 S&W
• Capacity: 50 rounds
• Material: DuPont Zytel based polymer body with blue steel upper tower
• Magazine Spring: Heat-treated stainless steel
• Follower: Injection molded polymer