Vortex, Burris, Badger Ordnance, Talley, and many others make rings with a cross bolt and a nut that is a 1/2" hex. That's the style I use on everything. It's quite easy to back off a 1/2" hex nut, even a Crescent wrench will work, in a pinch. I trust them more than true QD rings. But, hey, if a lever is what you have, that's your choice.
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