I'm working on a customer gun and I need to remove a UBR stock. It has a proprietary castle nut that uses an adapter and a standard castle nut wrench.

I don't have the adapter and I can't find anywhere online to purchase one. Nothing on Magpul or Amazon.

It's on step 7B here...
https://www.dropbox.com/sh/pwy...older_nav_tracking=1

Does anyone have a spare I can purchase?

Tony.

Let me check my stash. Have several UBRs and should have an adapter.

Appreciated!

Well, I was mistaken. All my UBRs are of the older variety and only require a large, flat-head screwdriver. Sorry to dash your hopes!

No worries, I'll sort it out.

Tony.