(POSTED LATER - I may have found an LT that is flat with 34mm rings LT 807 not sure how I had missed it when I was looking for one.
LINK to LT 807 This will work with your current scope to QD between AR rifles. FLAT BASE NO SLOPE In any case call La Rue to be sure this is what they recommend!!!
YOUR SCOPES Adj Range in.@100yds / m@100m:+50
Problem -- this particular scope has 50 total inches of adjustment at 100 yds. That means in an ideal world 25 inches up and 25 inches down. It defies the imagination why it is in a 34mm tube. Most scopes using 34 mm tubes have double the amount of internal adjustment. Nightforce has a new 34mm tube scope 5-25x56 ATACR Link
the range of internal adjustments is 120MOA which means 120 inches of adjustment at 100 yds so about 60 inches above and about 60 inches below.
When putting together a rife if you have a flat base and the rings or ring mount does not alter the angle in an ideal world the scope should have its adjustment centered with plenty of adjustment both above and below. it is not desirable to run a scope at the maximum limits of its ability to adjust, all the time.