Actually, this is from when he asked a priest if he should feel guilty about it. The priest said no cause blaming the guy who made the design is just plain stupid
okay but someone explain it to me real quick how is a guy that invented a real effective gun not at least partially responsible for the deaths that gun caused? it's not like he was inventing a new ice cream flavour and accidentally invented a people-killing machine!
Is the guy that figured out how to make steel responsible too is Henry ford responsible for the people killed in nice France or Marie curie responsible for Hiroshima and Nagasaki. What the creator intended it for and what other do with it aren't always the same. when he was making the gun was he thinking law enforcement can use this to save lives or was he thinking terrorist can use this to kill children or a better gun for our soldiers will shorten the war and in the long run less will die. If Marie curie didn't do research in to radiation we might not have had nuclear weapons but we also wouldn't have x rays, ill stick with blaming the user for its use not the creator.
It's like saying Tim Berners Lee should be guilty about inventing Internet since so much crap is going on over it..