In Minneapolis, a concerning trend is being monitored by federal agents. Devices that alter firearms are being imported from abroad. These small devices can significantly increase a gun's firing capacity.

Federal investigators are working to intercept packages containing these devices. The devices are relatively small, but can have a substantial impact on a gun's functionality. Further information on this trend is available from federal investigators and local news sources, such as KSTP 5 Eyewitness News.