It seems as if there are two kind of sorties. The ones that do not work and the ones that work very well. I wonder what the difference is. I know that the sortie with a wood stock I bought from Spain has a different frame (no hammer set screw slot) than the refurbished one I bought from HATSAN-USA which has a slot in the frame allowing access to the hammer set screw. But are there any other differences. One Sortie owner I received a comment from changed the hammer spring (used longer and lighter spring) and the hammer adjusting screw (put in shorter screw) to get his Sortie to work. My two sorties will fire semiautomatically but the bolt does not completely retract back to allow the magazine to rotate so only the first pellet is fired. Also it takes an extreme effort to cock the bolt .