No, I don't think that's it. I don't know if that sword actually did have a gun. All the arguments I presented to Melborn, he couldn't refute. It's Yasusada's personality that got him executed, nothing else.

I think someone must have lied to Melborn, and I... have a feeling it's got something to do with his relationship with Jason Todd. I think one of those two has to be the gunsmith. The way Melborn and Todd were acting after Hakurei was killed... it's suspicious.