Pulled the 20" Criterion hybrid barrel off and replaced with a Faxon 18" Gunner and new 0.625 adj gas block. Rifle dropped a little over 1 lb, down to 5# 11 oz. with JP LMOS BCG and std rifle buffer.
Shot it today to check for accuracy and right off the bat, it returned (2) 5-shots 1 moa groups with 55 gr blitzkings over 25.3 gr of AA2460. It will do for my next 3 gun
I was using my 4.5-12x Nikon Buckmaster for the 100 yds tests.
Sorry about the up side down pix