Also, Warne low rings are, if I recall correctly, the lowest of all major QD ring manufacturers. Low for one company can almost be medium for another. Total inconsistency. Weaver made fairly low QD rings and cheap but by ALL accounts they are junk!
Low rings are especially desirable for fat tube scopes (e.g. 30mm) or/and low comb European style stocks. Maybe not so much for AR tacti-crap setups.
Warne rings are a bit "fiddly" to get on the tube but many on here are experienced and can guide through it. Not a big deal at all. These are quality rings at a very good price.