But to the point of the M-1's;
The Blue Sky M-1's and later, carbines, were bought commercially from the South Koreans, by a firm owned in large part by Wayne LaPierre (Blue Sky). This was the first batch of surplus rifles that were imported due to the change of law in the GOPA of 1986 (which also banned more MG's), and the first large batch of M-1's ever introduced into the market. At the time, these were the only game in town, as far as M-1's were concerned, and shooters and collectors swarmed on them. Many were in beater condition, but a very few were correct and in good shape. As stated, they had an obnoxious stamp on the left side of the barrel. It was only later when DCM became CMP, and the "one per lifetime" rule was lifted, that the Blue Sky's became the leper of the M-1 club. But back in the day......