Originally Posted by
kayakkielbasa
Fentuz, thanks.
It seems like Altus m310 is a long cage one derailleur. And that leads me to a question if only those low end models like Tourney come with a short cage ?
You probably meant to ask whether low-end models like Tourney come only in a short-cage version. Short-cage versions are, if anything, more common among the high-end derailleurs meant for road racing bikes.
Let me Google that for you.
Shimano Tourney, long cage: