In the video, though, Owens, carrying the AR-15, backs the ABC crew away from an elephant as it mock-charges, and says, “We don't want to end up having to shoot her.

尽管如此，在录像带中，在一头大象准备佯攻摄制组时，欧文斯挥舞着着AR-15 步枪将他们解救出来。 他说，“我们不想走到射杀它的那一步。”

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The suspect also bought an AR-15 semiautomatic rifle, a military-style gun popular with sportsmen.

WSJ: Suspect's Rapid Descent

Unlike the military version, the AR-15 is a semiautomatic, firing one bullet per squeeze of the trigger.

CNN: Newtown shooter's guns: What we know

The original M-16 patent ran out years ago, and now the AR-15 is manufactured by several gunmakers.

CNN: Newtown shooter's guns: What we know