theoretically, what the best block model u can purchase. take everything into acct. caliber, number of rounds it holds, etc. dnt worry about bout CC/OC. so what is it glock nuts?????
G19. About as good as it gets.
I see the majority are saying G19. As you stated in the OP open/conceal doesn't matter, so I say G17.
Better grip than a G19 and due to size, length, or whatever i'm slightly more accurate with the 17.