Help with AR castle nut

Looks like the nut has flats on it, should be able to use an adjustable on it.
Put some tape on the nut before you snug it up to prevent any scratches.
 
Looks like the nut has flats on it, should be able to use an adjustable on it.
Put some tape on the nut before you snug it up to prevent any scratches.
This. Tape it up, put an adjustable wrench on it. You’re not gonna tighten it enough to hurt anything, or you shouldn’t
 
I have a Tapco AR wrench to do it all.

Although it can be improvised with a tap and a hammer, I prefer the finesse of the tool. I have built my own rifles so they’re invaluable.

Another essential is the bench vise.


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