The National Rifle Association (NRA) in the United States is famously against any hint of new restrictions on gun laws, however, they have backed the Trump administration for a restriction on Americans' guns, specifically they want to regulate the "bump stock" device that the Las Vegas shooter used during the worst shooting in modern American history.

This device is intended for use by people with disabilities and fits over the stock and grip of a semi-automatic rifle to allow the weapon to fire continuously, firing 400-800 rounds in a single minute.

The NRA believes that this type of device should be subject to additional regulations, and is calling on the Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE) to review whether these devices comply with federal law.

The Obama administration gave it the seal of approval to be sold in 2010 after concluding they did not violate federal law. The device allows the gun to buck back and forth, bumping the trigger against the shooter's finger which technically means the finger is pulling the trigger for each round fired which keeps the weapon a legal semi-automatic.

It is fairly inexpensive, around $200 USD and is not known to gun dealers as a popular item.

After the shooting in Las Vegas, even manufacturers of the bump stocks responded. Slide Fire, the leading maker of this device suspended sales and posted on their website that they will not be taking any new orders.

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