- Make sure this fits by entering your model number.
- MIL-G-21164D for upper receiver threads, barrel nut installation and buffer tube installation
- High quality lube good for any number of applications, exercise equipment, hinges, reels, ball bearings, bicycle gears, even telescope mounts
- Aeroshell 64 / Aeroshell 33 MS sets the standard with exceptional anti-corrosion and anti-wear performance
- Our portable .88oz jar (.5oz grease) container makes for easy application of this AR grease with just the tip of your pinky finger
- Made to perform under extreme pressure and heat to prevent damage.
This fits your .
Aeroshell grease that meets mil-spec MIL-G-21164D for barrel nut assembly on AR platform upper receiver threads. As used on complete Umbrella gov/military sample builds, offered here in .5oz jars for your own barreling projects. Unless you run your own shop, this jar will likely be the only one you will ever need. If in doubt, buy two and give one to your buddy* when you realize that you’ll never use it all.