Quick Tip: Where Should I Use Loctite on my AR-15?
This video provides a crucial tip for AR-15 owners regarding the use of Loctite (thread-locker). Brownells Gun Techs Caleb and Steve explain that Loctite should generally be avoided on AR-15s where steel parts thread into aluminum, as it can strip the softer aluminum threads. Specific components to avoid Loctite on include the castle nut/buffer tube connection and pistol grip screws. While some aftermarket grips might include alternative thread-locking material, Loctite is not recommended. For barrel nuts, proper torque is emphasized over thread-locker. Muzzle devices get too hot for Loctite to be effective, with Rocksett being a suggested alternative for high-temperature applications. The video concludes that while Loctite is a useful product, its application on an AR-15 is often inadvisable.








