ProMag DRM-A21 drum magazine is made in the USA. The Sig MPX drum magazine is constructed of DuPont Zytel polymer with injection-molded mag follower and heat-treated stainless steel spring. The mag upper tower features a heat-treated & painted carbon steel. This magazine holds 50 rounds of 9mm.
- 50-round drum Magazine
- Fits Sig Sauer® Sig MPX 9mm
- Heat treated stamped steel upper magazine housing with black oxide finish
- Magazine body constructed of a proprietary DuPont™ Zytel® based polymer
- Injection molded magazine follower
- Heat treated stainless steel wire
- Made in USA
