This codex entry is really incorrect - 10,000 Steyr machine pistols produced from 1916 to 1918? Where did that number come from? Try a few hundred. This gun was never taken into widespread service.
Also worth noting that the in-game model doesn't even have the fire selector of the real M.12/P16 and uses an adjustable rear sight, which was only ever made for early versions of the standard M.12 semi-automatic pistol.