Uhm....any good action should last you a lifetime while barrels are considered consumable and only last a few thousand rounds. Since you are already an ARC user have you not heard about the their new coup de gras that should retail for $899?
They quoted 6-12 weeks and yes paid 100% up front. I have a buddy with a few of their K&P barrels and they shoot lights out! Eric seems way cool and called me back within minutes, will post results once I have in hand.