Originally Posted by IronCorps
You'd have to buy a specially made weak mask to get a ball to actually break the lense. Most lenses on the mid-grade masks (as in, a $30+ mask) can stop 20 gauge shotgun blasts.
I've seen overchrono'd paintball guns crack car windshields... I wouldn't test the limits regarding my face if I could help it...
you can pickup a decent handheld chrono for < $70 if you look around. The extra safety is worth it, for sure...