Got my Magpul UBR and MIAD AR10 grip adaptor in today, everything looks good. Ordered Weds eve, got via USPS Sat (AZ-TX). Good timing!
This baby is going on my 308 AR and UBR looks like it will be a perfect fit! The thing is the HEAVIEST piece of magpul equipment I have ever held and lock is damn solid!
AZ also gave me a LEO discount.
Thanks for the help/sales!