If a piston is to be used only in a vacuum barrel gun then it does not need the usual gap between the piston nose and the first piston seal as there are no relief ports to bridge across. The shock absorber anvil can then be positioned at only a small gap from the end of the inner barrel tube using a new muzzle with no relief port section and with the forward length of the muzzle devoted to a longer shock absorber if the muzzle is to be the same length as it was before. The working course of the piston will be shorter by the length of the relief port section which will be only about one centimetre.
The "Taimen" does this as it is a pneumo-vacuum gun and not a wet barrel gun conversion, in fact the shock absorber anvil is inside the inner barrel tube and the piston nose never gets to the end of the inner barrel. The anvil and shock absorber are in a sense reversed and "inside out".
The "Taimen" does this as it is a pneumo-vacuum gun and not a wet barrel gun conversion, in fact the shock absorber anvil is inside the inner barrel tube and the piston nose never gets to the end of the inner barrel. The anvil and shock absorber are in a sense reversed and "inside out".
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