In 2005 Casio released the
M-Spec series. Most models were released also overseas, but as part of the
basic collection. The M-Spec models have all a ballistic nylon straps.
While the M-Spec models all have black or dark army colors, the part on
the inside is often bright colored. In the first series the inside was
orange, inspired by the lining of the MA-1 Flight Jacket, better know as
bomber jacket. There are also models that are black or army green on the
inside. There were M-Spec models released in 2005, 2006, 2007 and 2010.