What all types of grease can be used on barrel nut ??

[Kevinohio]

[BCHunter]

You want it to contain molybdenum disulfide. A tub is a couple of bucks,...buy once and your good for all the grendels you'll build.

[Mesa1978]

I've used Mobil 1 and Aeroshell, over the years, I haven't noticed a difference. Amazon sells repackagers of Aeroshell for smaller prices than a full cartridge, Umbrella for $7.95 as an example.

[A5BLASTER]

Go to your local auto shop buy the cheapest smallest tube of Mobil 1 or it's knockoff brand and have enough barrel nut thread grease to build several thousand guns.

[Kevinohio]

So the WD40 white lithium grease in can.isnt probably good right?

[A5BLASTER]

So the WD40 white lithium grease in can.isnt probably good right?

No not at all, don't use that. Wd40 has water in it, not something you want it between a aluminum threaded area and a steel barrel nut.

Cheap Mobil 1 grease in a tub is cheap and perfect for the job and will last you thousands of builds.

[Kevinohio]

Ok thanks

[BCHunter]

Think wheel bearing or axle grease, it needs high temperature stability , anti corrosion.

[Randy99CL]

So the WD40 white lithium grease in can.isnt probably good right?

About the only thing white lithium is good for is bicycle bearings and model trains. And I don't use it for those things anymore either. It's not even waterproof.

Went to Malwart, looked at their $3-$4 tubs of grease, picked high-temp high-pressure red one. I use a hobby brush to paint thin coating on bolt lugs, 1911 slides and everywhere else metal slides against metal.

I use good anti-seize on barrel nuts.

[Klem]

I bought a tub of Castrol LMM (high-pressure/high-temp with moly) years ago for a few dollars. It works fine for this job and anything else you might need grease for.

[Kevinohio]

About the only thing white lithium is good for is bicycle bearings and model trains. And I don't use it for those things anymore either. It's not even waterproof.

Went to Malwart, looked at their $3-$4 tubs of grease, picked high-temp high-pressure red one. I use a hobby brush to paint thin coating on bolt lugs, 1911 slides and everywhere else metal slides against metal.

I use good anti-seize on barrel nuts.

I got some permatex anti seize.it says copper on it.

[PVBoom]

Late to the party but I went with

Loctite 51147 C5-A Copper Based Anti-Seize, -30 to 1800 degrees F Temperature Range, 8 oz

[Popeye212]

Posted wrong lube this is it. I have used the oil but will probably fill the bottle with Mobil 1 0W-15.

https://www.ucwrg.com/materiel/oil-grease-and-tools/18/aeroshell-33ms-grease/

[Wafavre2]

Stay away from copper, galvanic or dissimilar metal corrosion can occur with a stainless barrel and aluminum upper and a different metal barrel nut with copper mixed in. which one will become the anode and which the cathode? Use grease an follow the installation instructions for torquing the barrel nut.

[FLshooter]