Description

ProMag magazines are made in the USA and backed by a lifetime guarantee against manufacturers 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.

Features :

• 50-Round Drum Magazine
• Fits Smith & Wesson SD40 .40 S&W Pistol
• Magazine Body Constructed of a Proprietary Dupont Zytel Based Polymer
• Hybrid Steel Upper Magazine Tower
• Injection Molded Magazine Follower
• Magazine Spring Formed From Heat Treated Stainless Steel
• Made in the U.S.A.