Hello folks and please educate me. Over numerous threads I have seen comments that favor the one-piece Colt barrel over the two-piece Springfield barrel. I had a Colt M1991, and I have a Springfield M1911A1, and I can't tell any difference. How is the Springfield barrel a two-piece barrel? Where do they join the pieces? Does the two piece barrel suggest that the Springfield is not perfectly true, "out-of-round" or something? Thanks!