So I was surfing open bolt stuff on Gun broker and ran across this. I examined it with the bolts from the library and it definetly looks like a bolt blocking bar relief cut in that SMG bolt. So I wonder if that guy even knows he's in possession of a unregistered MG.
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=328056773
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=328056773




