Perhaps I would understand your point better if you rephrased the second argument. You said "The second is a counter to arguments in support of increased restrictions." Well, so is the first. If anything they compliment each other. Then you end with a blatantly obvious statement about murderers still murdering in a fully armed society. This is also true. So 3 true statements. You have effectively stated our argument. Perhaps you believe, that we believe that gun ownership will make evil just go away. Nobody yet has made that argument.