Per the instructions from CA, the Barrel nut gets torqued to 30 ft/lbs, loosened, then torqued to 45 ft/lbs. It is loosened again and then torqued to 60ft/lbs. The hand guard screws are torqued as follows: Front screw - 25 in/lbs and rear screw - 20 in/lbs. I hope this helps.