If possible go along with him to the range and have him shoot you a 1" group, then you will know. I have found that when people say they are shooting 1/2" groups they really are shooting .75" groups, same with 1" groups in reality they are 1.25 or 1.5 inch groups. If they shot 1 group at any time that is .5 MOA then they imply it shoots .5 MOA all of the time. Just because you hit it once does not mean you can do it on command. But that will still not tell you if it fouls up quickly and needs cleaned after five shots to maintain it. It is a crap shoot. It maybe all he says it is, maybe not. I guess you can say that about any rifle being sold. Buyer beware.