Should Printable Weapons Be Permitted on Thingiverse?

Folks on Thingiverse are talking about possibly banning uploads which could be used as, or relate to, weapons. In particular, a bunch of different builders have started to upload parts of an AR-15 rifle, including Crank’s 5-shot magazine, pictured above. Where is this trend going? Should Thingiverse ban anything that could be used as a weapon? Leave your thoughts here or on Thingiverse’s discussion page.