I went to do some business with a guy that lives a ways away and had wanted some farm equipment I had and had no use for yesterday. had just met him so was not sure of his hobbies. When it was time to pay me he asked if I was willing to take partial payment in trade. Likely not I thought but asked "what for" anyways. Then he opened up a door to a beautiful room filled with rifles on the walls and pistols, revolvers, restored old guns filling the room. As well as crates of ammo filling a huge shelf. Prices offered where good enough to take some ammo in trade and then I asked about a .22lr replica of a old semi auto military rifle.It looked cool and the price tag was low. I asked about it as possible barter and he said I could not get that one. When I asked why he said "better to show you". So out to his outdoor range we walked and he handed me the rifle with a full mag and said "when you shoot hold back the trigger". I did and was shocked when it let out a rapid burst emptying the mag in full auto. He could not give it to me because he is an FFL and ordered the gun as a semi auto as it should have been. It was completely a factory "defect". Yet the most fun factory defect I have ever experienced. If you bought it new from a gun shop would you keep it? I would consider the idea of getting caught to great to have it around but curious if some would keep it just as it was.