ProMag 21rds 9mm, Blue

ProMag magazines combine traditional stamping and welding of heat-treated high carbon steel with modern precision injection molding using Mil-Spec polymer compounds. Each ProMag magazine is backed by a lifetime guarantee against manufacturer defects. This ProMag Drum Magazine is built from durable DuPont Zytel based polymer, featuring a full-length steel internal insert in the upper tower, stamped and welded just like factory magazines, ensuring strength and reliability. Magazine with a 21-round capacity Designed to fit Sig Sauer P320 9mm pistol The magazine body is constructed from heat-treated steel with a durable black-oxide finish Constructed with a sleek flat dark earth endplate Precision-molded for smooth, reliable feeding, reducing friction and ensuring consistent round stacking The magazine spring is formed from heat-treated chrome silicone wire Proudly made in the USA for superior quality and craftsmanship