Ok this is probably a stupid question but here it goes. On my Romy Build there was not Head space guage at the party. I was told that is should be ok since it was a matching kit. I am not sure of how you would adjsut any thing. I THINK head spacing is simply where the barrel lines up in the front trunion. if you use a matching kit the barrel can only go in one space if you are to put the barrel pin back in. so can some one fill me in on this properly please? I did fire the gun with a bout 60 rounds on sunday and it seemed ok. I used one round in the mag then went to 2 rounds, then 3 rounds, then 5 rounds, then 10. I did have a couple of Jams but i figure that once the gun is cleaned real well it wont be a problem.