ProMag Drum Magazine Features The magazine is constructed with a steel frame for durability and a DuPont Zytel polymer body for reduced weight and increased resilience. It features an aggressive texturing on the outer surface which provides a positive grip for quick and secure handling crucial during tactical reloads or while wearing gloves. The internal mechanics of the magazine include a heat-treated stainless steel spring and an injection-molded polymer follower ensuring smooth feeding and reliability under various conditions. The combination of these materials and design choices results in a drum magazine that is both robust and efficient perfect for recreational shooting competition or tactical applications. ProMag Drum Magazine Specifications Manufacturer: ProMag Type: Drum Magazine Caliber: 7.62X39MM Capacity: 50 Rounds Fits: AR-15 pattern firearms chambered in 7.62X39mm Material: Steel/Polymer (DuPont Zytel Polymer) Color: Black Spring: Heat treated Stainless Steel Follower: Injection Molded Polymer