These are the banks financing the assault weapons industry -- ThinkProgress.org

Since the Parkland shooting, corporations with financial ties to the NRA have been subjected to intense scrutiny. In less than two weeks, consumers have convinced more than 20 companies to end relationships with a gun lobby that has encouraged the proliferation of assault weapons and aggressively blocked virtually all legislation to curb gun violence. ....
https://thinkprogress.org/banks-financing-guns-c985a46dd4d1/