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.
21-Round Magazine “Fits Sig Sauer P320 9MM Pistol” “Magazine Body Constructed of Heat Treated Steel with Black Oxide Finish” “Flat Dark Earth Endplate” “Injection Molded Magazine Follower” “Magazine Spring Formed From Heat Treated Chrome Silicone Wire” “Made in the U.S.A.”
