I have a 30 mm tubed scope coming my way. I am looking at the options to mount it. These Vortex rings look good and are made in the USA. Does anybody here use them? I will wait until the scope arrives to determine what the lowest rings I can get away with are.

http://www.vortexoptics.com/product/vortex-viper-30mm-riflescope-rings-low-height