BUMP- STOCKS: The Legal Device That Enabled Rapid Fire in Las Vegas
Bump stocks, legal gun accessories found in the suspected Las Vegas shooter's hotel room, make semi-automatic weapons simulate machine guns. Shelby Holliday explains how bump stocks work and why they're legal in the U.S.
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Clearly illustrates the difference between automatic and semi-automatic weapons.
On an AR 15, this type of butt stock is standard. Contained in this butt stock is the buffer spring that enables this weapon to be semi-automatic. It works just like the spring inside a 9mm pistol. What makes it able to fire in semi-automatic mode faster is the type of spring that is in there (just like a 9mm pistol). These people really should do some better research on the components.