To put it mildly I think they are junk when compared to a good European scope.

A buddy bought one for his custom barreled long range deer rifle.
He was trying to pinch his Penny's on a scope....he spent at least 30 minutes trying to convince me it was as good as a Swarovski, Zeiss or Schmit & Bender.
First time he looked through my 56mm Schmit & Bender he regretted his thriftiness.

If his had Zeiss lenses it was Zeiss rejects.