This is a ninety percent complete model of the Mk 42 Forearm rocket launcher seen in Iron man 3. the internals of the design need a redesign because of they they don't perfectly match up.

Needed materials:

3x servo motors 

1x arduino nano

1x battery

1x m3,m4 hex bolt set

Needed Tools:

sandpaper

soldering iron

paint(if you want to paint and finish this)