Really liked Viper but after 3500 rnds elevation won't stay locked. Yes warranty will cover no problem but I discovered this a day before a section match. Just not sure I trust Viper to full abuse of a match gun.
I believe that overall shape of the 5" guns are the same, just different slide cuts. I bought a left over 5" walther holster from Redhill and Q5 fits excellent.
I have been running stock recoil spring on steel guide and feel recoil impulse is mild. Gun stays very flat. I also seen the tungsten guide rod at nationals and believe it will come equipped with same spring.
I just used springer precision dovetail mount in a older G34 to try division. I think optic sits just fine and doesn't feel its to high. I'm enjoying division so far.