Quote Originally Posted by evert View Post
If my memory is correct, its been stated somewhere that the HW55 has been delivered with different pistons adapted to different power level.
May just be a rumor though, or me remembering something that was said about another gun.
I'll definitely be stripping the HW50 action down in the morning as something doesn't add up here after reading this thread :-

https://www.airgunbbs.com/showthread...15#post7990915



Perhaps I measured it wrong this afternoon, though I don't think I did --- very weird.