ProMag SIG MPX 9mm 50rd Drum Magazine, Black Polymer - DRMA21

ProMag 50-round drum magazine chambered in 9mm Luger, designed to fit SIG MPX platforms. Features a heat-treated stamped steel upper housing with black oxide finish and a proprietary DuPont Zytel polymer body for durability. Made in USA with injection-molded follower and heat-treated stainless steel components.