Do not know why people continue to by NcStar. I have a 6 power scope, made by NcStar that cost me $35 because Trijicon got them to stop importing them, and they were being blown out the door. I treat it like a $35 scope. I spend the same money, or more, on a case of beer, so it is no sweat for me if it breaks.
Most Burris Scopes are not made here. A few are assembled here in CO.
The Burris Timberline scopes are made in the Philippines.
The Carry Handle mounts, if you go cheap, do loosen. The point is not to go cheap. There are $8.00 to $20.00 mounts that look just like the IOR (or the Smith Ent. mount if you want it made in the USA), but they do not work.
Hell even the good mount can loosen when you put them on a high recoil (.308, .458 Socom, .50 Beowulf, 450 Bushmaster). At this point, Blue Loctite is your friend.
Good optics cost what they cost. Buy the best you can afford and do not be seduced by bells and whistles.
Buy once, cry once.