A friend has a AO 1911A1 for sale. It's a ringer for a USGI WWII 1911A1, and I have not seen these before. Has anyone had any experience with these before I shell out some big bucks. He also says it has a hammer block like the series 80 Colts. I did not cock it or cycle the slide. My Colt 1911A1 was mfg in 1953, maybe it needs a buddy in WWII type park.