"Blue Sky" imports are still, as said above 100% USGI guns, just be aware they have not been checked, repaired or rearsenaled like the CMP guns. Also there a lots of documented cases of the Blue Sky import mark struck so heavily that it ovaled the barrel in the area of the stamp. If the stamp looks light this is not an issue but well worth checking. At the very worst you may need to rebarrel. At the best you have a genuine USGI gun at a great price.....