6mm arc upper Can Be Fun For Anyone
Criterion are button rifled and hand lapped blanks. We then just take their blank and equipment it to supply you with the ideal barrel doable.Even though the contract ultimately was won by Sig Sauer as well as their new cartridge, the 277 SIG Fury, the 6mm ARC (6ARC for short) remains to be an unbelievably modern and effective intermediate cartridg