The MR1 has the Zeiss, which I think is a 1" tube and not a 30mm like the Vortex. I just took a better pic for you and uploaded it. Hight of the rings are 2" from top to bottom and you need 1" minimum to clear the rear sight. Tube sits in the space perfectly. I think you'd need a little higher for the vortex. (Sorry but I'm not switching rings to test for you.) ;c)Thanks for the pic. and info., I was trying to find the height of the rings necessary to clear the rear factory MR-1 site (with the Vortex 4-16 44 scope, being able to clear the rear site with the rear of the scope) so I could use the rings as they are correctly worn (one in front & one in rear of turrets and have full adjustability forward and rearward of the scope) and to determine if an adjustable cheek rest would be required, but I appreciate the reply.
I plan on using that exact Vortex scope if I go the route of a MR-1 rifle.
Cheers D
MR1 with Zeiss scope. https://www.dropbox.com/s/zfgw0a6vpxwxg5e/20150930-4.jpg
I originally removed my rear sight and installed the scope "properly" but later wanted the iron sights as well so set it up this way. So far, in over a year of use and a few thousand rounds, all is well and holding zero.





















































