Aeroshell 33 ms grease gun in easy to use 10 cc syringe re-packaged by HQ pilots. Why buy a tube set for nearly thirty bucks when you don't need that much? You can have this handy for your next several AR rifle builds for a third of the price. Prevents superior aluminum from spreading itself to the nut in the extreme heat and pressure of welding steel. Avoid thread galling as well. Aeroshell 33 ms grease is an extreme pressure (EP) grease based on the proven Aeroshell 33 lithium complex grease technology, and is fortified with 5% Molybdenum disulfide.