I picked this visor up while surfing YouTube. It's the first I've heard of it and wondered if it was just the latest 'fad' ammo, or of this stuff might have teeth, (pardon the pun)...
[video=youtube_share;mJGH7cDFw7c]http://youtu.be/mJGH7cDFw7c[/video]
[video=youtube_share;mJGH7cDFw7c]http://youtu.be/mJGH7cDFw7c[/video]