Description Features After usage, it can be refilled and reused again and again… Saves weight and space. Can store Blue Gas, Green Gas, Red Gas, and Black Gas. Great accessory for every GBB owner. Fits inside most grenade pouches. 2-stage fill valve that allows a near-full liquid gas fill. Can re-fill gas magazines, gas grenades, and gas shells. Included a high-density foam ring that supports the portable gas container pin when stored inside a pouch without a cap. The portable gas container ships empty. This product comes with a 2-stage valve. If you’re not sure what this means, please watch this video.
