I believe they refer to it as a Lefaucheux action shotgun developed about 1830 by a Frenchman named Casmir Lefaucheux. I have a few Husqvarna shotguns with this action. Unfortunately I haven't needed to tighten up one of these actions before so I can't help in that area. I will do some searching and see what I can find...

WBLDon

Last edited by WBLDon; 11/29/15 06:36 PM.