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  1. Walther Air Guns
    i found this interesting post on Network 54. The poster swapped out the stock LGU spring and seal for Vortek parts. "For about $30 you can get a Vac-seal 25mm piston seal and a HW95 OEM replacement spring (.125" wire X 33 coils) from Vortek. I put this in my .177 and it is as smooth as ever...
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