Quote Originally Posted by FPoole View Post
I can say that the Walther LGU piston will fit a TX200. Mine was lightened to 195 g, but it just never made power and it didn't feel as good as the original Mark1/2 type factory set up. Just another in the list of things so easy to do to a TX200 only to be put back to pretty much factory spec.
I never lightened the LGV piston I fitted in my .22" TX, I just fitted a HW seal and that was about all I had to do to get an easy 12ftlbs from the shorter stroke.
I fitted the HW breech seal because after fitting the piston the velocity was a little bit inconsistent --- after fitting the new breech seal all was good.

http://www.airgunbbs.com/showthread....7-Operation-TX




All the best Mick