I just noticed a recent thread relating to the latest iteration of Heng Long's MFU and electronics package on a Leopard. It's listed as version 6.0 (5) on Heng-Long-Panzer.de
There was a suggestion that it can combine an Airsoft (BB) configuration with an IR receiver. But, having looked at the web page, I think it's suggesting that you can choose between IR or Airsoft; but I need to check other sources. If so, this would be a retreat, by Heng Long, from their no IR policy.

I suspect it's still either, or.
There's an old Youtube vid from rctanksau you might find useful, if only for the background to the Mako project.
Edit: as an addendum to observations on the V6 (Gen 5) electronics fitted to the new Leopard, I also found the following on Heng-long-Panzer.de, and this a is a cut and paste:
".....Version 6.0 (Generation 5) - fully proportional
New with version 6.0:
BB-Shot and infrared Kamp functions selectable
The steering knuckles are now all made of metal
4 different tank sound simulations
Improved and more accurate steering
Headlight and brake light can now be switched on and off
Recoil function can now be set in 3 levels
Fast and Slow mode can be selected
The light of machine gun can be switched on and off
Driving straight ahead has now become more stable
There are several connections available on the electronics, for example. Camera, WiFi, laser, etc....."
There seems to be an option to switch between BB and IR, and the board also appears to have connections for Camera, WiFi, and Laser. The problem is, this new MFU is described as tk v6.0, and yet there are V7 HL MFUs on Ebay in the US.

HL products don't often lend themselves to straight or clear answers...If only the version appeared on the MFU cover, instead of on the PCB, it would help.
If it emerges that they've produced an electronics package with switchable battle functions (IR/Airsoft), then you might consider buying one. I think (but could be wrong), the HL stopped making IR/Flash/Gun recoil
packages in around 2014, and the Mako package was one means of getting emitter/receiver options into their BB tanks, and delivering Tamiya battle capabilities. This would involve removing the airsoft gun, if barrel recoil and flash are to be added to the package.