I think you could. Just a matter of getting a receiver that will "fire" 2 servos for a 2 shooter. The more servos the more complicated. I think with BB out of business, necessity will cause us to find a way.
I am a idiot when it come to electronics. However, a friend fires his stuff with Milligan radios. Puts them both on the same channel and each time he presses talk the unit fires.
If it is on voice activated and a car goes by it will also fire. Make sure it is turned off. This was interesting one day when he was trying to figure out the firing problem while not touching the radio.
As many of us have the BB units we need to channel all of our information somewhere we can find it. Possibly a sticky at the top for good information. I would love to purchase some of the hard bumpers for a 4 shooter but not having any luck. Would be great to find another set of electronics that would work as good or possibly better. There has to be a market for these things as customer service seems to be what turned most people away.
People on here make their own multi- unit receivers. It should be doable to use tritronics or dogtra to fire the servos on BB. I think Tri tronics has a receiver that will fire two "things." I don't know about dogtra.
I use the BB transmitter to fire a winger and run a Malcolm retired gunner.
The way BBs were made the servo would always return to the middle position. If you rewire the servos with something else you'll probably have to manually return the servo arm.