(FOX BUSINESS) Since the Orlando nightclub shooting on Sunday, gun sales have rapidly increased throughout the United States.

Adventure Outdoors Owner Jay Wallace told Fox Business Network’s Stuart Varney that sales of AR-15s and other firearms have “really kicked up” since Sunday.

AR-15’s may look like military rifles but they are actually semi-automatic guns, which means they can only fire one round with each pull of the trigger. By contrast, military-style guns have the ability to fire multiple rounds with one pull of the trigger. The ‘AR’ in AR-15 actually stands for ArmaLite rifle, named after the company that developed it and does not stand for “assault rifle,” according to the National Shooting Sports Foundation.

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