So, R2 rolls a yellow dice, which is heavy on the surges. Say you end up in a tight spot with him and you don't think stun will be your best option. Wouldn't it be funny to have him give a Blast 2 and 1 damage! Well, if the attack goes through that is.
R2D2 + Explosive Armaments
Pretty funny, but probably not a great use of your skirmish points.
This is something I'd like to do in a campaign setting if we ever get a card like Explosive Armaments in the campaign.