ProMag Steel/Polymer Rifle Magazine AR-15/M16 .223 & 5.56x45mm 30-Round Black 30RD

ProMag Steel/Polymer Rifle Magazine AR-15/M16 .223 & 5.56x45mm 30-Round Black 30RD. The follower is injection molded and the magazine spring formed from heat treated chrome silicon wire. Specifications for ProMag Steel/Polymer AR-15/M16 .223 & 5.56x45mm 30-Round Rifle Magazine: Manufacturer: ProMag Magazine Capacity: 30 Round Cartridge: 5.56x45mm NATO .223 Remington Gun Model: AR-15 Features of ProMag Steel/Polymer AR-15/M16 .223 & 5.56x45mm 30-Round Rifle Magazine Fits AR-15 / M16 .223 and 5.56x45mm rifles and carbines Magazine body is constructed of a proprietary DuPont Zytel based polymer and heat treated steel with black oxide finish; steel upper polymer lower housing. Injection molded magazine follower Magazine spring formed from heat treated chrome silicon wire Package Contents: ProMag Steel/Polymer AR-15/M16 .223 & 5.56x45mm 30-Round Rifle Magazine ProMag COL-A33-30RD: Steel/Polymer Rifle Magazine AR-15/M16 .223 & 5.56x45mm 30-Round Black