The N frame was a pipe dream anywhoo, but I’m jonesin’ for one for my 442, or my 640. I actually ordered from the company last year, and have yet to see one!I'll check but I think the only J frame Tyler I got is currently on my 640-1....I know a guy and I'll see what he has laying around for you...That RB N may be a tuffy to find...I love the Mountain Guns...LOVE THEM....