I have a 9mm AR that I'm changing the handguard on. New handguard means new barrel nut. Is there a torque spec or adequate "rule of thumb" for a barrel nut on a pistol caliber carbine?
I have a 9mm AR and am replacing the hand guard. The new one came with a barrel nut that is round but that has a faceted section for a wrench (like a crescent wrench, not barrel nut wrench). Old barrel nut comes off easily and new one will screw right on. Do I have to use a torque wrench on the...