Originally Posted By: BangPopPro Shot Brand Pro Gold grease. Bolt lugs and the muzzle threads.
This was my go to lube for years on bolt lugs and barrel shanks.
Last time I was due to restock, I made the switch to Mobile 1 grease for everything, including muzzle threads. A lifetime supply for the cost of 1 oz of Pro Gold stuff.
On another note, I do 50/50 mix with the Mobile 1 grease and Mobile 1 20-50 oil for the AR's.