Communities around the U.S. have seen shootings carried out with weapons converted to fully automatic in recent years, fueled by a staggering increase in small pieces of metal or plastic made with a 3D printer or ordered online. Laws against machine guns date back to the bloody violence of Prohibition-era gangsters. But the proliferation of devices known by nicknames such as Glock switches, auto sears and chips has allowed people to transform legal semi-automatic weapons into even more dangerous guns, helping fuel gun violence, police and federal authorities said.
The (ATF) reported a 570% increase in the number of conversion devices collected by police departments between 2017 and 2021, the most recent data available.
The devices that can convert legal semi-automatic weapons can be made on a 3D printer in about 35 minutes or ordered from overseas online for less than $30. They’re also quick to install.
“It takes two or three seconds to put in some of these devices into a firearm to make that firearm into a machine gun instantly,” Dettelbach said.
Because the goal is to kill the animal quickly with limited pain. “not lethal enough” entails every lethal wound that takes minutes and hours to kill instead of seconds. But for killing humans there is a reason why armies prefer 5.56 over .308 in most standard issued weapons.
Meanwhile, 5.56 is plenty if you are accurate.
And, the US military is currently adopting the MCX Fury as their new standard issue rifle.
That thing fires the .277 fury cartridge that is way better at armor penetration than 5.56 ever could be.
And the reason .308 isn’t used as much for most military issued rifles is more to do with recoil and capacity than anything to do with the ballistics.
A .308 would be far better for killing literally anything than 5.56, but is mostly for use in semi-auto marksman rifles and some snipers. Where accuracy of first shot matters more than volume of fire.