M, C, L and S Series
For the technical or mechanical minded, I have just posted a Solidworks CAD model of the M9-A1 ('2011) than can be accessed via web, and can be explored piece by piece in an assembled state.
Go https://grabcad.com/library/steyr-mannlicher-m9a1-polymer-pistol-1
... and press the red "3D" bottom...