12-26-2015, 04:16 AM
My 18" BHW has a mid length gas system and the gun runs great. It is what I specified and how my gunsmith ordered it from BHW. If I do a 20" or longer upper at some point I'll spec a rifle length gas system. As I write this I am sitting here looking at my new Black Friday AA 16" Lightweight upper that conveniently arrived 12/24 and it is also midlength. Hope to shoot it in the next few days when the Aero Precision mount and Badger Ordnance latch show up. Santa did a good job at my place this year.