High-capacity magazines for guns can quickly spread death and terror. Ban them.

Rhode Island state police Capt. James Manni displays AR-15 cartridge magazines while testifying before the Rhode Island House Judiciary Committee in 2013. (AP Photos)

A new gun threat is painting a larger target on everyone’s backs. Lawmakers should figure out how to curb it.

As Frank Main, Tom Schuba and Stephanie Zimmermann of the Sun-Times and Chip Mitchell of WBEZ reported in Sunday’s Sun-Times, extended-capacity magazines — which hold 10 or more bullets and can be used with handguns as well as rifles — have become more common despite bans in some places.