Helmet:    Sand Viper (modified)
Head:    Gung Ho V11
Torso:    Big Brawler V3 (modified)
Arms:    Grunt V6
Waist:    Gung Ho V11
Left thigh:    Roadblock V9
Right thigh:    Gung Ho V11
Lower legs:    Gung Ho V11

    I can still remember the day I got Backblast along with countdown from the Kids R Us on route 17 in Paramus, and he was one of my favorite figures as a kid, so I was really excited to find out that he was getting an update. But the figure we wound up with just wasn't Backblast, so I decided to give him the update he deserved. I tried to get as much of a fell of the original using only new sculpt parts, and I think I succeeded in a true to the original update.  The bazooka is a take of the one in halo, and was constructed from a pen and a FastBlastViper bazooka.