Made from a lightweight and durable reinforced aluminum construction Compatible with WE-Tech and other compatible M9 Series airsoft GBB pistols Designed with an ergonomic wide base to assist in reloading magazines Full metal internal system Holds a capacity of 11 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 30 Rounds Propellant Green Gas Compatibility WE-Tech and other compatible M9 Series Airsoft GBB Pistols Color Black California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov