Description
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.
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.
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