YouTube has no patience for DIY 'bump stock' gun demos, bans them

Youtube has banned "how to" bump stock gun modification demos from the site after a Las Vegas gunman employed the device to rapidly fire upon thousands of country music fans, killing 58 and injuring hundreds more.

Although the ownership of automatically-firing machine guns has been banned in the U.S. since 1986, a bump stock is a device you can add to a gun that will allow it to release rapid bursts of bullets. This looks and sounds similar to a machine gun, but is technically (and legally) not a military-grade automatic weapon.