USA TODAY reported that an AR-15-style rifle was used in the assassination attempt. CNN reported Sunday that the gun was used to identify Crooks. Here's what we know about the weapon used in the ...

Tens of millions of AR-15 rifles and similar variants are in the hands of US gun enthusiasts When it comes to America's vast gun culture, no weapon has become as ubiquitous - or controversial - as ...

Every time there is a massacre involving an AR-15-style weapon — such as the May 6 shopping mall shooting in Allen, Texas, that killed eight people — the gun draws a new flood of media ...