I know this has nothing to do with an AR15, however; everytime I've needed a question answered about a gun someone on this site has an answer. Anyway, I was given a singleshot .410 shotgun. I do not know where it was made are anything about it. On the side of the reciever, it says "Columbia" On top of the barrel, it is stamped " 410-12m/mChoke" If anyone knows anything about this gun, please let me know. Again, Thanks for any replies.