URX Wrench for Knights Armament KAC SR15 barrel nut
This is a URX wrench built for the KAC barrel nut, but not made by Knights. We found this barrel wrench when looking for a solution to remove a very tough barrel nut, and we were at the point of breaking the wrench we had or stripping the teeth off the nut. Made in America by a small machine shop in upstate New York, our friends at Potomac Armory have sourced this wrench for us, and we swear by it.
To use, be sure to remove the gas block and muzzle device first. We recommend the use of Locktite #242 (blue) when installing, and lots of elbow grease when uninstalling. A torque wrench is recommened at no more than 50 ft-lbs.