I think Akulahawk has hit the nail on the head. If "loaned" under a military assistance program the weapons could not be sold and imported into the U.S. They would have to be returned to the U.S. Govt. and then could be turned over to CMP. In the case of these M1
's from Korea, I believe they were sold or given to Korea.
What I don't understand is that it is said that when CMP inquired of France, regarding M1 rifles loaned by the U.S. to France, they were told that the rifles had been either destroyed or sold. It seems like if the rifles are sold or destroyed the U.S. can't or won't do anything about it. So what was the point of calling it a loan ?? I thought you were expected to return loans.