Hey guys, glad I stumbled into this forum! Does anyone know if there is any difference between the normal M-Frame lenses and the 2.0 ones (i.e. the Military Issued ones)? I know the middle top is different, there is a hole to clip the 2.0 version. What I want to know is, is there any difference in curvature between the 2 lenses? Also is the nose bridge shape exactly the same? I ask because I want to get these prescription inserts for my M-Frame: http://www.esseyepro.com/U-Rx-Insert_191_detail.html They say they fit the M-Frame 2.0 but do not mention the M-Frame. I really want to get some inserts and have found no other options. I cannot Rx the glasses directly because my degree is too high. All help is appreciated. Thanks!