ProMag Drum Magazine, 9mm, 50 Rounds, Fits SIG MPX, Polymer, Black

Designed for reliability, the ProMagA(R) Sig MPX 9mm 50-Round Drum Magazine gives you everything you expect in a well-functioning drum. The upper magazine housing is constructed with heat-treated stamped steel with a black oxide finish while the magazine body features lightweight DuPont(TM) ZytelA(R) polymer construction for superior strength and reliable field service in virtually any environment. This aftermarket magazine features a heat-treated stainless steel wire spring and injection-molded polymer follower to ensure reliable and smooth feeding in high-stress target or defensive situations. You no longer have to compromise easier loads with failures to feed or struggle with overextending the ratcheting mechanism. This aftermarket magazine works like it should when it should. Plus, all ProMag magazines come with a lifetime warranty. Order today! Made in USA.