The current production Charter Arms "Dixie Derringer" (.22LR and .22 Magnum) is in this size class.I am unaware of any revolver in the size class of the NAA since the Freedom Arms is no longer made,...
I own one each in .22 short, .22lr, and .22wmr. All have been 100% with quality ammunition, and all are plenty accurate for 25' distances. My personal preference for the .22lr version is a 40gr solid lead, no hollow point. Might as well have SOME penetration, eh?