Beretta A300 trigger pack removal

Hey guys, I'm not normally a shotgun guy, but I decided I needed a gas gun shotty considering how cheap the A300 Ultima Patrols have gottne recently.

anyways, I was looking through the field stripping process and was looking around to see what roll pin punch size I'd need to take down the trigger pack pins. I read online that beretta uses metric vs. imperial, and that 3mm was the correct pin punch size to take out the pins, but since it was Google AI and I trust Google AI as much as I trust a methhead watching my purse, I figured I'd ask her to see if anyone know what size pin punch I would need.