Sudden discharge of a gun? WTF? Ven's eyes widened as he saw that - and then he started to grin.

"Okay, I've got a better idea - Sora, get that gun!"

Remember that rope, Roxas? Well Ven pulled it off his shoulder and started looping it around one of his ankles. They wouldn't take his gun, but they would make him unable to reach it for awhile.