Glock pistols popular among US criminals because they're easily modified, report says

BALTIMORE — Glock pistols are a popular choice for people committing gun crimes, in part because they can be easily converted into fully automatic weapons using a small device, according to a new report based on data from nearly three dozen U.S. cities. Often called Glock switches or auto sears, the devices have received heightened attention in recent years because they're increasingly turning up at crime scenes. They effectively turn semiautomatic weapons, which fire one bullet per trigger pull...