ProMag magazines are made in the USA and backed by a lifetime guarantee against manufacturer's defects. Magazine springs are precision wound using heat-treated chrome silicon wire and each and every step of the assembly process is checked and double checked in order to maintain the same consistent level of quality.

• 50-Round Drum Magazine.
• Fits Fn 509 9MM Pistol.
• Magazine Body Constructed of Heat Treated Steel with Black Oxide Finish.
• Injection Molded Magazine Follower.
• Magazine Spring Formed From Heat Treated Chrome Silicone Wire.
• Made in the U.S.A.