The tools of modern terror: How the AK-47 and the AR-15 evolved into rifles of choice for mass killers

Time and again it's the same. A lone gunman or a small group of killers with rifles commits spectacular crimes that seize the attention of the world.

terrorism Musings on Maps

Firearms

The Gun Industry in America - Center for American Progress

M16 rifle - Wikipedia

How the AR-15 Became Mass Shooters' Weapon of Choice

Roller-Delayed Revival: The Heckler & Koch SP5K

The tools of modern terror: How the AK-47 and the AR-15 evolved

Disarmament United Nations

The Evolution of Police Long Guns – Heloderm LLC