States attorneys general have filed lawsuits against Glock for not preventing their firearms being easily converted to machine guns.

The two suits claim the company’s leaders have known for decades that significant design characteristics of the weapon make it susceptible to conversion to a machine gun.

New Jersey and Minnesota sued Glock on Thursday, calling on the gunmaker to stop selling firearms that can be adapted with dime-sized switches to fire up to 1,200 rounds a minute.