Hi, do they make optics that mount to the stock sight screw holes ? I really dont want to drill and tap my S&W 's if I dont have too . With so many chioces out there a novice can be overwelmed . Maybe something for the range & another for hunting. I would like to stay USA made if possible ; EoTech looks ok for the range , but is it any good for hunting ? This may help too 586 4" and 6" are what I'am looking for optics for . Thanks , Greg