Quote Originally Posted by BigLarge View Post
I just got some barrel nut shims from Bison Armory. I'll be using them to install my NSR tonight. http://bisonarmory.com/ar-15-barrel-nut-shim-set/
The shim set performed as advertised. I was able to time my NSR with 32 ft/lbs using the shims. Would not have been possible without them.