

They can order the parts off the internet.

“With a semi-automatic you squeeze the trigger and it automatically reloads. Phoenix police tell KNXV the same type of gun was used in Cesar Chavez High School shooting on Monday. “He was not using a bump stock,” said Smyth. Sound recordings from inside the school Wednesday indicated that the weapon in question was on a semi-automatic setting, according to Smyth, who heard about 12 shots in a video posted to Twitter. A bump stock, the stock replacement now infamous for its role in increasing casualties in last year’s Las Vegas shooting, can make an AR-15 into a crude version of an automatic weapon. And some models, like the Colt M4 carbine, can shoot semi-automatically as well as in three round bursts. That design change, from automatic to semi-automatic, is what makes an AR-15 legal for civilian sale.ĪR-15 style weapons are designed and manufactured by many different companies. AR-15 weapons are often used by SWAT teams and other tactical teams during, often close-range, operations. “AR-15” is used as a generic term for a broad range of semi-automatic rifles, designed to be tactical versions of the original automatic M16 military rifle. Smyth said the shooter at the Pulse nightclub in Orlando used a semi-automatic MCX that was marketed as a “next-generation” AR-15. The shooter in Las Vegas, had 23 weapons stashed in his hotel room, including several semi-automatic AR-15s like the one he used to shoot out the window down at the crowd. And while semi-automatic handguns still account for the vast majority of weapons used in mass shootings across the United States, semi-automatic rifles are increasingly common weapons of choice. Wednesday’s incident was the 30th mass shooting of 2018, according to the Gun Violence Archive, an organization that aggregates gun violence data.
