Acrobat XI or DC doesn't work in Firefox 64bit (v48.0)

I just switched to FF 64 bit (v48.0) and I was wondering if there will be an addon that works like the 32 bit version.

I use a web-based database that uses PDF's. With the FF 64 bit I must either save the PDF's to view them or view them through Firefox PDF which is horrible. In the 32 bit version I can view them in Firefox using Acrobat.