“CMMG 60AA90CAB Dissent MK4 6mm ARC 10+1 (2) 16.10″, Black Armor, Side Charging Handle Rec, 15″ M-Lok Handguard, Side Folding Stock, Zeroed Grip, Muzzle Brake, 60/90 Ambi Safety, Adj. Gas Block” has been added to your cart. View cart