All the information on this site is why I enjoy it so much.I have a half stock(beleave it to have been full stock origionally) with a barrel marked with what I always thought was AC but now think it to be AH. The marking is very worn but almost identical to the stock marking shown in this thread as being AH. This rifle is shown in Jan's pictures of the 2011 Norris Show along with my swivel breech,but the barrel marking is not shown and I doubt it would show up in a photo.