External Adjustable Din300 HP Air Regulator 0This external high pressure air regulator is specially designed for airgun shooting or filling and it can be screwed on to a 200 300 bar scuba tank with DIN300 connection. Even airguns that consume a lot of air can benefit from this new version! The regulator will reduce the outgoing pressure according to your settings, so you can optimize the working pressure matching your airrifle or pressure tube. A stable pressure is the base for a a constant