ProMag ProMag Polymer Magazine AR-15 Colt 9mm Black Steel Lined 32 rd. COL-A3B

This Magazine from ProMag has a hybrid design body with a stamped steel upper section, over molded DuPont Zytel based polymer. It features an injection molded magazine follower and a spring formed from heat-treated chrome silicon wire. Fits AR-15 9mm SMG carbines;Hybrid design magazine body with stamped steel upper section and over molded with DuPont Zytel based polymer;Injection molded magazine follower;Spring formed from heat treated chrome silicon wire;Made in the USA Manufacturer Part Number: COL-A3B