20mm Oerlikon Initial History and Specifications. The ordnance for this weapon actually dates back to 1918, when German arms engineer Reinhold Becker came up with a 20x80mm round that fired using ...

The shooter who killed three children and three adults at The Covenant School in Nashville used three of seven legally purchased firearms in America’s latest massacre. Here’s what we know ...

The AR-15 and 9 mm pistol caliber carbine appear to have 30-round magazines, according to experts who reviewed photos and video released by police.