http://www.patreon.com/ForgottenWeapons

Most people assume that the AR15/M16 safety/selector lever was designed specifically to be very ergonomic and shooter-friendly, with the "safe" position putting the lever right under the thumb to allow a quick and easy snap into semiauto mode. Well, that's not actually the way Eugene Stoner initially designed it - as we can see by looking at AR15 prototype serial number 000001...