I have been looking at systems to free float a 20" A2 barrel. Most of the systems are for the carbine length AR's.
Does anyone have any experience with the FIRSH system from Olyarms? They have a carbine, mid length and rifle lenght FIRSH. Which one would be better on a 20" barrel, the full lenght or the mid length?
Scroll to bottom of thread and see a full length on a 20" rifle. I am sure TREETOP will share his expierences.