Yes the 11.5 gunner, it's fantastic. It shoots well with no suppressor but I havent shot it much without one. I use a gemtech Halo titanium on this rifle and the M4. I have also used my Sandman K. All good options, the Halo titanium handles better with the weight. Just get an adjustable gas block and run the 11.5 it's the best of both worlds.Edit: the Surefire would work good as well just going to be a bit heavier on the end of the gun. Here is the rifle with suppressor next to a 14.5 M4 with a standard FH. 10.3 with a Sandman K etc. The Colt lower sits a little lower with the shorter stock. Sent from my SM-G965U using Tapatalk