Hello All,
This looked like a good place for me to chime in for my first post.
I was in the business for 11 years in the 80's and 90's, and sold a lot of guns and still remember a bit.
Blue Sky was an importer who imported M1 Carbines and Garands from Korea, as stated by others. And yes many of them were trash, but there were several nice ones that came in. Many of the early Blue Sky's were so poor that the insides of the barrels were parkerized during the refinishing process. After numerous complaints to the importer, this problem was fixed. Towards the end you could tell the importer was at the "bottom of the barrel" as the overall condition of the Carbines and Garands was poor at best.
But, as I stated there were some nice ones that made it through, albeit they were refinished guns. I had the liberty of ordering on a average of 20-30 of each most weeks during the Blue Sky haydays, and would send an employee out to the range behind the shop to print each weapon on a target and test for functionality. If we found an exceptional weapon it went into rotation to replace my current import, and/or save for steady A+ customer. As best I can recall, we'd get an exceptional weapon for 1 in every 50, excluding the early runs of parkerizing of inside the bores and the last days of the real beaters.
No matter how well the weapon functioned, the stocks were always beat up and original, and I used the Easy-Off Oven cleaning method to strip them and refinished them with linseed oil, which made a 100% difference.