There is provided a bonding material composition for obtaining a joined body by unitarily joining two or more members to be joined by means of a bonding material layer, wherein the bonding material composition contains flat particles, non-flat particles, smectite-based clay, and an inorganic adhesive as main components. The gas supply systems includes a straight or bent direct connection between the low pressure portion of the paintball gun and the gas cylinder and includes a gas cylinder securing and support assembly. The handle portion is designed for being gripped in a hand of a user.