This is the latest in Air Systems Adapter (ASA) designs, using a lever based action to ensure easy gassing up of your paintball marke even those using high pressure tanks and ball valves that can be very difficult to gas up with other systems. All alluminium construcion Regulator adjustment markings Hidden mounting screws Hi lever ratio for even easier gassing up. Push button gas release drops the lever and auto bleeds the gas from the ASA. Fits all Emek, EMF100, MG100, Etha2, Etha3 and Etha3M markers.