Quote Originally Posted by T 20 View Post
As a starting point I'd fit the later longer stroked and lighter weight synthetic sealed piston, a piston liner coupled with Delrin guides and top hat and see what the firing cycle is like.

Piston weights and strokes :- http://www.airgunbbs.com/showthread....99#post7168099

If you have a 4mm transfer port on the gun you may want to consider sleeving the transfer port down to 2.8mm if it feels a bit slammy with the above tune.


All the best Mick
If Uncle Mick says do this.....DO THIS!