Yea, I've got a Henry .22 lever gun sitting here that hasn't been cleaned since I bought it a few years ago. It must have a couple thousand rounds through it by now and it still shoots just fine. If the AR-7 won't do that, there are plenty of other .22 rifles that will.

Some people go nuts with scrubbing the bore and what-not, but you really don't need to unless you're shooting something like black-powder or other corrosive ammunition. A bore-snake, a rag, and a bottle of CLP is plenty of cleaning supplies for a bug-out bag or whatever.