I always wait a year or two for any new product glitches or manufacturing issues to be sorted out, cars, firearms, or computers. Unless you really, really want the different sized back straps, I would say stick with the proven and reliable Gen 3 Glocks.
The 2nd Amendment was, and still is intended to protect the individual citizen from Tyranny. Whether that Tyranny originates from
our own Government, common criminals, Progressive Liberalism, or foreign invaders, is irrelevant.