Made from a lightweight and durable reinforced aluminum construction Compatible with WE Hi-Capa 4.3 Gas pistols Full metal internal system Holds a capacity of 28 rounds, excellent for additional ammo Durable outer shell handles outdoor terrain and rigorous use In the Box 1X Gas Magazine Specifications: Brand WE Tech Build Metal Frame, Internals Magazine Capacity 28 Rounds Propellant Green Gas Compatibility WE-Tech Hi-Capa 4.3 Gas pistols Color Silver California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov