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Review on ๐Ÿ”ฅ Loctite 555338 620: High Temperature Bearing Mount Bottle for Superior Performance - 36ml by Charles Julian

Revainrating 5 out of 5

Ideal for the AR barrel extension.

Used to fit a Proof Research barrel extension onto an AR-10. Be sure to clean the barrel nut threads before installing the nut. I also used a wooden cotton swab to pry it out of the gas tube hole and into the top. Used 33ms grease on nut. I put about 2/3 of my tongue on it and left it for a few days. Went back to final tightening and when I removed the nut it was tight with no slack.

Pros
  • Sealant
Cons
  • Some Difficulties