I just had a restricted transfer approved.
According to the transfer notification, it was submitted by the seller Sep 5. On the phone the CFC told me it was approved Sep 11, which would be 5 business days. However, the transfer notification is dated Sep 13, which would be 7 business days.
I already have a LTATT and other restricted firearms.
One other note. I had previously requested to receive an email with the transfer notification when this was approved. I was told they could do that. However, I never got that email. When I called today, however, they were able to send me a transfer notification via email.