I'm glad to know that. Based on my research the arm of the M Frame Gen 2 was enhanced at the hinge for reinforcement due to breakage issues with the Gen 1. So the arm, starting at the hinge, was tapered all the way back to the first bend as opposed to the Gen 1 where the taper stops about halfway. The pair I have has the Gen 2 icon at the temple but does not have the enhanced arm. I admit my research may be faulty. Also, the frame has a metallic black/green color that I have not found on any of the other frames I have seen. Do I have something special or just a dud?