WHAT DOES MILITARY SURPLUS GUNS MEAN?

I've used them previously, and would want to have a single Later on. I am a fifth generation veteran and really pleased with that, This is a Privledge to get served our region and would go yet again if essential! Thank You:Certainly one of my most prized rifles is really an American-built Mosin m/91 which was reworked via the Finns at some point in