I need to make a "pattern" or a groove on a side of a cylinder that makes the cylinder turn 1/4 every time a small part moves inside the groove.

Nerf guns use similar setups but the most noticeable is in a certain revolver... I had to look it up on Forgotten Weapons just to find it

If i extrude a round "rod/cylinder" and want that groove in it, how do i do it?

Would be super-awasum if someone drew a SW2015 compatible "sample" that i could use to modify into my part.

Apologies. There might be a language barrier here also...