Here are thebest attachments and equipment for the ultimate Holger 556 loadout inMW3. Best Holger 556 loadout and class setup inMW3 A great all-purpose setup. Screenshot by Dot Esports Best Holger 556 build inMW3 Barrel:Chrios-6 Match Optic:Corio RE-X PRO Underbarrel:XTEN Phantom-5 Ha...