Resurrecting this thread, we've got a Star Wars LARP event going on this October in Bolivar, Missouri which uses airsoft for the combat, and this thread came up. We've got a lot of guys planning on coming in armor to pew pew for two days. Mostly Mudtroopers and Mandos.
The leader of the event, Chris Schulz, posted his testing results showing how well ABS can take an airsoft hit:
We also recommend stronger eye lenses, full seal ANSI Z87 rated material such as welding lenses is required.
Feel free to join the Discord channel if you're interested in learning more!
https://discord.gg/FKzN2HMz8C