I am a very good liar.
I never change/edit/alter my story after giving it. You sir are doing the opposite in a last ditch attempt to salvange some pride and dignity. Sadly I gave that method up as a kid. It doesn't work just makes you look bad.
Anyone trust me yet? You don't? Good, you'll live longer.
Moral here? Don't change your story. Don't add to after the fact to play yourself as a victim. Breeds questionable doubt.
This right here your story falls apart. You say you asked him. He told you.
We asked him face to face, before we left, at his front door, at his house, why is there something rattling in the handle of the gun? He tells us in these same words "how the fuck should i know whats rattling in your gun it works perfectly fine!