** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** Ruger has announced that it has ...

[UPDATE, 4:42 p.m.: The shooter has been identified as 20-year-old Adam Lanza. Initial reports identified the gunman as his brother, 24-year-old Ryan Lanza, who is being questioned but not a suspect.] ...

Sources: Mom bought assault-style rifle and two pistols from 2010-2012. Dec. 17, 2012— -- Law enforcement officials said that Adam Lanza was armed with four firearms when he started his rampage ...

The gunman at Sandy Hook Elementary School allegedly used a .223 caliber rifle. This is one example of a gun that uses this caliber. Update 9:50am, December 17, 2012: The New York Times reports that ...

The most common definition of “caliber,” as it pertains to guns, is about as straightforward as you could want it to be: Caliber simply mean the diameter of the hole in a rifle or pistol barrel. Yet ...