I purchesed this about 3yrs ago. My question is if I try to re sell it, how do I know what work was done on it from GAP. When I got it a guy was selling it for his friend, and back then I did not even ask what work was done, or what barrel was put on it. I got a really good deal!!! so I snatched it up, and it is a shooting machine. I know the lug is a Badger, Tac bolt handle, Gap insignia on the barrel. I really have not put a lot of rounds through it.