I just picked one of these up and don't know much about it other than the cool factor. I did a you tube search and a Google search but I'm not finding what info I need. I know it's a 1998 model and it's stainless steel but it's DAO and no key lock, all the ones I've seen have a hammer spur and key lock, did I get one before that? Also did the guy before me put the hammer on or did they ever come in this configuration?