Get ready to meet the M2 by 4th Design. The same company that has brought us one of the most wanted aluminum bumper cases for the iPhone 4, the Blade. The Blade bumper was designed by Tiger Design, which just so happen to have started a new brand called 4th Design in order to produce something different. The M2 is the finished product, a full CNC machined aluminum case for the iPhone 4 that like its younger brother, could very well be a case Optimus Prime would use himself. Designed deep within Korea, this is one spectacular aluminum case which may very well be the next best thing to the Blade bumper. Does the M2 tickle your aluminum fancy? If so, you might want to jump past the break for the full review!