Smythbusters: Barrel Nut Torque
Guntechs Steve Ostrem and Caleb Savant go over proper torque specifications on an AR-15 Barrel nut and dispel the myths about the "sweet spot" specs to make your rifle more accurate.
WARNING: Never attempt to disassemble or reassemble a firearm unless you are absolutely certain that it is empty and unloaded. Visually inspect the chamber, the magazine and firing mechanism to be absolutely certain that no ammunition remains in the firearm. Disassembly and reassembly should follow the manufacturer’s instructions.