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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.
- Heat-Treated Chrome Silicon Wire Spring
- Manufactured & Assembled in the U.S.A.
- Easy Loading
- Rugged Construction
Smith & Wesson M&P-40