ProMag MP5 / PTR9 9mm 50-Round Polymer Drum Magazine

This is a 50-round 9mm MP5 / PTR9 drum magazine from ProMag.The ProMag MP5 / PTR9 50-round drum mag is an affordable aftermarket magazine engineered for dependable performance in any target-rich environment.Constructed of a proprietary DuPont Zytel polymer, this MP5 drum mag offers impressive weight savings while retaining lasting strength for faithful service in adverse conditions.Additionally, a heat-treated steel wire spring and injection-molded polymer follower work together to deliver relia