I recently acquired an absolutely beautiful Colt M1911A1 that looks like an M1911. The major external difference is the lack of an extended mainspring housing. By the serial number it was produced in 1943 and is so marked as M1911A1 U.S. Army. The Parkerization is perfect in all respects. What bothers me is a new blued barrel, hammer, safety, and take-down pin all of which are high gloss blued. The rear sight, labeled Micro, is also blued and adjustable. Obviously this piece has been refinished - restored to new. My question is did someone like Trumball do it or was it an arsenal job. In any case, why would anyone used new, high blued parts? Does anyone have ideas?