Theres no need to get too sophisticated with rings for the M7. I simply run 30mm Talley rings (the standard one where the base is integral with the lower part of the ring, i run a 4-20x50 Sightron which is fairly big, I'm pretty sure my Talleys are 'lows' and the scope sits nice and low with clearance on the objective.
With my scope i can dial out to 1,000 yards no problem, no need for 20 moa rails etc. I think my scope has 80 moa of elevation travel, so it'll be zeroed somewhere close to the middle of that, that still has close to 40 moa of up adjustment. I need 22 moa for 1,000 yards.
Talleys are light and simple and run the scope lower that using a rail and rings.
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