08-23-2014, 07:08 PM
wheelguner Wrote:AR15 Torque Value Chart*
-Carrier Key Screws: 50-58 in/lbs
-Barrel Nut: 30-80 ft/lbs
-Receiver Extension (Rifle): 35-39 ft/lbs
-Receiver Extension Castle Nut (Carbine): 38-42 ft/lbs
* Torques are from the current Army TM 9-1005-319-23&P W/C #8.
This came from this site:
http://www.weaponevolution.com/forum/sho...PROCEDURES
Just installed a Shilen HBAR barrel into a billet Mega receiver, VERY tight fit by the way. Set torque wrench to 30 ft lbs and tightened then loosened the Mil-spec barrel nut three times. The gas tube was almost perfectly aligned but not quite so I stepped up the torque and tightened a final time. The gas tube lined up perfect at a torque setting of only 32 lbs. Is this tight enough or should I try to advance the barrel nut 1 more hole (1/20th of a revolution)? Any thoughts? Thanks