Special Comments:
This robot was caught in the transition period between metal and plastic.  Gradually all parts became plastic, whereas in the very beginning all parts were metal.  For want of a better name, I call this kind of robot a "chest gunner".  He walks, turns, the doors on his chest come open to reveal two guns, where he then proceeds to fire in a sweeping circle.  Phew!  Good thing he's just a toy!

Update:
I have been informed that this robot's name is "Super Guns Robot".  Again, thanks goes to William Norder for this information.