ECU Pirates
.308 Win
Not everyone uses 10 round mags in a nightstand gun. The sight radius can make a difference and for someone concerned about velocity why would you not want more barrel? Bigger does not have to mean 19 vs. 17. A 19 for carry and a 31 for the night stand could be an option for some.And what advantage do you get with the bigger of the 2? Glock 19 vs 17 with a 10 round magazine?