I'm very happy with my two Gen 4 Glocks (19 and 23), but decided I wasn't going to wait for a Gen 4 G20. So I bit the bullet (figuratively speaking) and ordered a 20SF. I figure when (if) Glock releases the Gen 4 G20, I can sell my SF or have both. Already ordered some Underwood ammo. Should be here next week. Thanks for the great advice and knowledge from The 10 Ring! I've been lurking for a while.