ProMag Industries

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 : - 40-Round Magazine - Fits Springfield Kuna - Constructed of a Proprietary DuPont Zytel Based Polymer - Injection Molded Magazine Follower - Magazine Spring Formed From Heat Treated Chrome Silicone Wire - Made in USA