High-performance 12-gram CO2 cartridges provide you with a reliable gas power source. High-quality design for a secure fit and solid seal for a reliable, consistent performance with almost any gas-powered Airsoft or hunting sports platform. These High-performance 12g CO2 cartridges. They can be used with Airguns, Airsoft, and suitable paintball guns. These cartridges are constructed from metal and filled with 12g of high-quality liquid CO2 and serve as the perfect power source for virtually any gas-operated guns.