Quote Originally Posted by bigtoe01 View Post
Matty, weren't the BSA O ring implements a little tight.... Not sure if the AA implements were the same?
BSA are famous for being tight yes - The grooves in the piston heads have to be made a little deeper - only a little though...

AA Sidelever O rings are not to tight , they slide nicely on the guns I have stripped and serviced

I expect you would have them even less crushed though

Matty