Not a whole lot of info out there right now, but Top Shot Dustin posted this vid from SHOT about a new lever action AR lower from Bond Arms. Basically, you can use any standard AR upper with their modified bolt, but you have to disable the gas tube. He mentioned turning the gas block around, but I would imagine an adjustable gas block turned off would work better and you could still use on a regular AR lower if you wanted.
https://www.youtube.com/watch?v=bGCBPReDdcI