Welcome too Mossberg Owners from Central PA!!
Swing by the New Members area and introduce yourself too the rest of the crew!!
Now with that outta the way, when you say "tactical scope mount" what exactly do you mean?
There are plenty of options out there for you when mounting any type of optic.
Anything that fits a Mossberg 500 should fit your Mav88 so long your receiver is drilled and tapped. If not there are still options available. That is some information I am going to need to help