News and publicity releases on a .22 center-fire rifle offered for military purposes, the Armalite AR-15, have raised the question as to whether it should replace the present standard M14 rifle of ...

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There are two popular types of AR-15 calibers: 5.56x45mm NATO and .223 Remington. The sales of modern sports rifles are high these days, and many people are flocking to the AR-15. What exactly, then, ...

Update: In the immediate aftermath of Sunday’s deadly shooting, police identified the long gun Omar Mateen used as a AR-15-style rifle. The exact model was later revealed to be a Sig Sauer MCX, which ...

A 14-year-old boy used an AR-platform-style rifle in a high school near Atlanta, Georgia and killed two students and two teachers. He also wounded nine more people in Apalachee High School, eight of ...

While AR-15-style guns and your typical handgun are both firearms, one radiologist claims that the difference between them can be seen in the bullet wounds they leave behind. According to radiologist ...