08 October 2017, 06:38
7mmfreak6mm AR or Fat Rat
A friend of mine just gave me a Krieger AR15 blank that is 6mm with 1-8" twist and rifle length gas. For those shooting the 6mm AR or 6mm Fat Rat, is the rifle length gas system going to tie me to the 6mm AR? I had planned on the Fat Rat with +2" gas but now I have this barrel.