I purchased a nickel boron .308 BCG that is "match grade". I want to know, am I being overly sensitive or is this bolt not match grade? There are heavy machine marks on the bolt face. All are in a circle. I know in bolt rifles, I had all my bolt faces squared and lugs lapped. I check all my other ar bolts and I have 3 .308 bcg's in other rifles and none have these machine marks. The picture does not show them that well but I will post it anyways.