Quote Originally Posted by greenwayjames View Post
Of course they work. One large volume spring air rifle manufacturer used them on piston heads for all of their models for a considerable number of years. Different power outputs over the range of guns. They used big and small transfer ports
Absolutely

I have 8 AA Sidelever Springers from the 1980s all of which run very nicely on O rings

But there are people who vehemently insist that they are out of date and should not be "revisted"

Can you believe it?



Matty