Prior to retirement, I typically attended the annual Interservice/Industry Training, Simulation and Education Conference, in Orlando. I/ITSEC is "the" major simulation industry conference. There are thousands of exhibitors occupying square acres at the Orlando Convention center every year just after Thanksgiving.
At the show in at past, I've walked through demos and operated several firearms trainers and systems involving pnuematics, electonics, large screens, headtrackers, etc. etc. Shooting a gas-powered M4 at simulated targets is pretty interesting. I wasn't in the small arms training side. At the time I was going to the show a lot, my interests were crew served weapons in medium scale non-motion multi-vehicle live, virtual and constructive simulations at the Co/Bn level.
The 2020 list of public exhibitors is here:
https://exhibits.iitsec.org/2020/pub...ortMenu=105000
It's a long list, but money bet says that any firearms simulation system worth their salt will have had at the very least a display booth at the show, might be worth a look?