I need a castle nut in the LA area

[morepoop4u]

I need to find a castle nut for my friend. Where is the closest place that carries AR parts. He's located in the valley.

[Somekindagenius]

http://www.adxtactical.com/store/pc/viewPrd.asp?idproduct=1038&idcategory=0

You can order online and pick up at their shop.