After examining my U. S. & pistol more closely & replacing flannery barrel with a HS barrel, I have observed that the P proof is on top of the slide centered. Some information say that it
should be on the lower part of slide. What is the correction orientation of this proof mark in this serial number range? Also barrel bushing is void of maching marks as some reference material says it should exhibit, what is correct. a
Any input on these two item will be greatly appreciated. Thanks
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