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I know that the piston has a ball in it and when the gun is fired the ball is forced backwards and makes a airseal and then when the piston hits the cylinder head the ball is popped off releasing the inside pressure, but does this actually help, is it worth getting the Vacuum piston? And if so which one should i get for a high speed setup, like about 650fps setup, the hard piston or the BaRiKaRu-Compo piston. And do i have to get a different spring guide cause on airsoft atlanta they have a different one for the vacuum piston setup?
