Been shooting for over 50 years---eyes and some other things "ain't what they used to be", but I can still out-shoot most. Worked at a range for over 3 years and learned a few tricks from some really good shooters---anyway I have had 2 Lone Wolf barrels for several years. One for my 22's conversion to 9mm which is wonderful. The other one is a little different---23 barrel for my 27. I have several hundred rounds thru it with no noticeable issues until a week ago. Was getting off center firing pin strikes with it. Noticed when it is "in battery" the rear of the barrel doesn't come level with the slide. Put the stock barrel in and it fired fine---the other one would not fire at all. When I let the slide slam home with fresh Mag. it seems closer to battery but still won't fire the round. When I push down on the back of the barrel it stays down. Not true with the other 3 pistols. I know the baby glocks have a larger visible gap and maybe some more "play" between slide and frame than other models. It has never been a problem before. Any ideas .............. Wanna kill these ads? We can help!