Jesus didn't teach anything about weapons. He taught about unresolved anger. He taught about reconciliation. And he taught about mercy and peace. He also taught about the downward spiral of violence ("Those who live by the sword ..."), but he didn't teach anything specific about the use of the weapons.

His actions, as recorded by the Evangelists, were mixed when it came to weapons. It is true he admonished Peter to put away his sword after severing the servant's ear, but on the other hand he also drove the money-changers out of the temple with a whip.

I agree with you in spirit that Jesus was devoted to peace-making. But it's a far reach to think that the Gospels have anything definitive to say about the issue of gun ownership.