The wounds show the lethal force of the AR-15. But they are rarely seen. The gun is the weapon of choice for many mass killers. It works with brutal efficiency. March 27 at 6:06 a.m. The scenes of ...

Tens of millions of AR-15 rifles and similar variants are in the hands of US gun enthusiasts When it comes to America's vast gun culture, no weapon has become as ubiquitous - or controversial - as ...