What kind of anti-seize lubes do you guys use on receiver threads when installing a new barrel? Or do you use any at all? Loc-Tite makes an anti seize lubricant. Would that be sufficient?
HF
grease,
you won’t need to worry about seizing or galling.
Valvoline SynPower moly-fortified grease. Available at most autoparts.
I use Brownells Action Lube Plus.
Like regular wheel bearing grease?
Wheel bearing grease is good but you want to use the stuff that is moly fortified. Moly acts as an anti seize compound.
Moly-B.
I also use this product. It’s worked perfectly, and even on high round count carbines, it’s maintained it’s properties and not locked up the barrel nut.
I have a tub of some sort of high temp moly grease that was bought for M242 chain guns and not used for some reason (so I inherited it 
somehow) – it works well with M16FOW barrel installs.
How much compound do you put on the threads? A good coating, or just a dab?
Kev,
the grease you speak of (we called it GMD) is pretty easy to get ahold of in mech units, never in short supply, so it’s not a surprise that the can wasn’t used. Just make sure you wear gloves when applying it-apparently there’s a carcinogen in it somewhere…
GMD - Grease, Molybdenum Disulfide
It is used on the M242 and the USGI stuff was carsonagenic as of the 90’s. I don’t know if they have changed the formula.