I passed up Shockwave initially as I was disappointed there was no adequate gun mode, but then I came across a method. So I bought him when I was in Singapore at Robo Robo, which has lots of out of print items. Glad I did as this gun mode is pretty good, considering we'll probably never get a G1 laser gun. The green tube is a plastic straw to allow connecting the hose to the top instead of the side 5mm port. Bonus is that this method uses nearly all the accessories. The spaceship cockpit makes for a nice trigger.