This isn’t about science. Science is at worst the enemy and at best a tool for prying humans off the land so that it can revert to wilderness.
As investments go, gun manufacturers are a pretty good one. Teachers’ unions are a really bad one. But New York and California teachers’ unions which are funded by stealing from taxpayers, many of them gun owners, are using that stolen money to divest from gun manufacturers, even though this moves their larcenous pension funds closer to the brink of collapse, requiring further taxpayer bailouts.