J&JSporting Aluminum Accumulator/air Tank for Pneumatic Storage, Building air Cannon, Paintball, Airsoft, MilSim, Nerf Rocket or Simulated Grenade Launcher. This repurposed high pressure DOT3AL Cylinder has been modified for use as a low pressure air chamber, accumulator, or reservoir. Features a 150 PSI working pressure, Standard tire type schrader valve for filling, 0-160 PSI gauge, A.S.M.E. 150 PSI safety pop off, 3/4" male thread output. This is to build your own Paintball, Airsoft, MilSim, NERF type rocket or grenade launcher. Also used to build air cannons for launching tennis balls, confetti, or surf bait launchers. You get the aluminum accumulator tank and fill/gauge/safety manifold ONLY. No valve or barrel is included. There is newer model of this item - ASIN B07HY1ZHB5