After four months of study, a Cabinet working group tasked by President Obama to reform the initiatives unveiled eight categories of military supplies local law enforcement will be banned from acquiring from federal agencies or with federal funds.

The list includes grenade launchers, tracked armored vehicles, armed aircraft, bayonets, and guns and ammunition of .50 caliber or higher.

There is a “substantial risk of misusing or overusing these items,” which “could significantly undermine community trust,” the group’s report reads.

Other federally supplied equipment, such as wheeled armored vehicles, drones, helicopters, firearms and riot gear, will come with new strings attached for local police to ensure officers are trained in their use and in “community policing, constitutional policing and community input.”