Prometheus has made a name for themselves by making the very best quality airsoft accessories and parts possible, and this piston is no exception. This half tooth Prometheus Hard Piston is made to be used with helical gears. This upgraded piston is very lightweight and very strong. Polycarb pistons are great for keeping a lightweight power train that won't damage the gearbox shell, but at the same time remain strong enough to hold up with mild upgrades. Prometheus has some of the best R&D in the industry, which is why they gave this piston 4 metal teeth. This piston is recommended for use with mildly upgraded guns.
The use of aftermarket airsoft parts is not an exact science. Some parts may require fitting even thought they were designed to fit without modification. Professional installation of upgrade parts is highly recommended.
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