Check with beretta or your local shop. You don't need to grind anything down. The "big eared" safety controls on either side can be replaced by a factory "small ear" safety switch. They are readily available on the berettausa.com site.
btw , don't ya love that little gun? I thought my wife would love another 9mm but i have not put it down since i got it for her. feels great , eats everything ,totally reliable and accurate as hell. The "snap grip" magazine pinky extension is really a well thought out feature. very cool. I have the fullsize .45 and love that too.