I know I am wanting to get a version in 9mm Glock, but does it come in a G19 grip and one in a G17 grip? I was thinking they came in either or? But the guy I talked to said he was only aware of the G17 grip. I still want to grab one but if there are 2 different grips, the 19 makes more since to me? Any way, any one know the the differences in them, could you please explain them to me. Thanks in advance!