Castle Nut got loose

[ericneth63]

I am fairly new to working on AR's so replaced my buffer tube with a Mil Spec version ans installed a Magpul ASAP plate. I hand tightened the castle nut buy after shooting around rds i noticed the nut was loose. Whats the best way to make sure this does not happen again. Thanks all

[Noobert]

stake it

[Sonic_mike]

stake it

stake the castle nut

http://www.calguns.net/calgunforum/showthread.php?t=123160&page=2

or blue loctite

[Barabas]

Stake it like a vampire. Blue locktite is not for you.

[ar15barrels]

I hand tightened the castle nut buy after shooting around rds i noticed the nut was loose.
Whats the best way to make sure this does not happen again.

Don't listen to any of these guys.
They all had it wrong.
Properly tighten it and THEN stake it.