The ProMag magazine bodies and followers are precision injection molded from durable, lightweight polymer, while the springs are crafted from heat-treated chrome silicon wire. This combination guarantees outstanding quality, consistency, durability and reliability. Magazine with a 32-round capacity Designed to fit Mossberg MC2 9mm pistol The magazine body is constructed from heat-treated steel with a durable black-oxide finish Precision-molded for smooth, reliable feeding, reducing friction and ensuring consistent round stacking Magazine spring crafted from heat-treated chrome silicon wire for enhanced longevity and consistent feeding performance Proudly made in the USA for superior quality and craftsmanship