I knew that freaking piece of shit was LYING! The gall of that man! So long, Valentine!
And goodbye, for real now, Gyro. I hope you're proud of Johnny...
@Eruza
Johnny threw one of the Valentine's unloaded gun for him to pick up, to see if he didn't had a hidden gun on him. If Valentine was telling the truth, he won't need to have a hidden gun on him, so nothing would've happened.
But if he was lying, both guns would be attracted to each other(since they're guns from different dimensions), showing he had plans to betray Johnny(like happened in the story).