My father is looking for a mid-sized carry gun similar in size to a G19. Specifically, he likes the Sig P228 or P229, but we are having a hell of a time finding a used one locally. I'd like to get other options in case he decides to expand his search.

His criteria:
Similar in size to a G19 or P229
Either DA/SA or possibly striker fired WITH a safety
9mm

I really only know Glocks and he is convinced he will shoot himself with one. So I need some help giving him options.