I'm looking to put a A2 bird cage on my post ban upper and have been in contact with a local guy who might be able to do it. Here is the response I got from him:

I spoke with DPMS today and found out how they attached there
> brakes the only way for me to do it is to ³Clam Shell² the brake and
> this could damage the threads beyond repair. I think I can do it for
> you but you must be aware that I have NOWAY of knowing how deep into
> the threads they have pinned this thing so once the brake is removed
> the barrel may be scrap you should know this. Red
>


My question to you all is what does this mean? Would I just be better off picking up a pre/no ban barrel?

Sounds like he may be wanting to cut the brake in half lengthwise down the threads to get it off... hence his warning he may cut the threads...

I could be wrong though.