I have a Sage ALCS stock With heavy barrel op rod guide with a Krieger heavy barrel. The guide is loose on the barrel, not sloppy loose, but I can spin it around the barrel with one finger. The barrel is not knurled and I'm wondering if it should be. The rifle was accurate during break in and sighting, I only shot m-80 ball for this, wasn't sub MOA but not bad for ball ammo. Seeking opinions from people with more knowledge than me.