The gun used in a fatal Nashville school shooting was purchased in Arizona, police said on Thursday afternoon.

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The Gatling Gun-style weapon, which is based on the 20mm M61 Vulcan autocannon, can fire 20mm x 102mm rounds at an extremely high rate. It has a dual fire rate of either 3,000 or 4,500 rounds per ...

Rep. Thomas Massie and other House Republicans are pushing the "National Constitutional Carry Act" to protect Americans' ...