I just got two brand new AAC thread protectors straight from AAC last week. I was disappointed to find out they don't have an o-ring to keep them from loosening, so I ordered Tornado-Technologies Thread Protectors instead. I was going to try and return them to AAC, but due to the absolute nightmare it was dealing with their CS to get them to even SHIP the damn things, I'd rather take a loss and sell them here.
Asking $20 each, shipped.
I can do PayPal only at this point, as I'm moving in 7 days.
Email is the best way to contact me, and I can snap a photo if you'd like.