How jacked up is your hand, and which hand? The AR style sling shot charging handle is not the easiest to operate 1 handed.
I have an ARV. It runs great. Its not picky on ammo. I neglected mine to let it get gunked up, and it refused to malfunction. My only complain with it I guess is the bolt catch. If you bump the ass end while the bolt is locked back, it drops the bolt fairly easily.
Your having a bunk hand may not work with the usual AR design, though. Maybe something with a side or forward positioned charging handle would be better.