Best weapon for Concealed Carry advise

I recently picked up a FN509 and have yet to shoot it. Im looking forward to it. It seems a bit of a bear to get the slide back, I was hoping for something a bit more manageable for the woman although she can do it with a bit of effort. It will not be a concealed carry, more of a backup to the house 12 ga. If I were to conceal, it would be a bit cumbersome.