Antiseize is whats in the specialty ones they sell for this. You can also just use high temp grease. I have MOST always done it 3 times but like CM said 2 will get you to the promise land. I highly doubt some of these manufacturers season the threads. Also the torque speq range on an AR is so broad that once you've built afew you arent ever going ti under or over torque one unless you're an idiot.I follow the same procedure using high temp grease. My AR-15 gunsmith manual calls for anti-seize.
Antiseize is whats in the specialty ones they sell for this. You can also just use high temp grease. I have MOST always done it 3 times but like CM said 2 will get you to the promise land. I highly doubt some of these manufacturers season the threads. Also the torque speq range on an AR is so broad that once you've built afew you arent ever going ti under or over torque one unless you're an idiot.