For rifles which were issued, nearly all were overhauled and current at some point. Most certainly are a mish-mash of components and were upgraded as demanded. Here are some of Those people parts. Manufactured only as an "overstamped" model (an arsenal-refurbished M1 with new rear sight along with other late https://keeganbrdnz.tribunablog.com/the-2-minute-rule-for-buy-james-river-armory-49458679