ProMag Polymer/Steel Pistol Magazine Sig Sauer P320 9mm 21-Round Black SIG-A20-FDE-21RD. The follower is injection molded and the magazine spring formed from heat treated chrome silicon wire. Specifications for ProMag Polymer Steel Sig Sauer P320...
ProMag Polymer/Steel Pistol Magazine Sig Sauer P320 9mm 21-Round Black SIG-A20-FDE-21RD. The follower is injection molded and the magazine spring formed from heat treated chrome silicon wire. Specifications for ProMag Polymer Steel Sig Sauer P320...