Board Thread:Theories and Speculation/@comment-25043344-20180527201340/@comment-30323490-20180614084539

Just because you have the rinnegan doesn`t mean that weapons and rockets will just pop out of your body. Those tings need to be implanted into the user like any ninja puppeter would.

Same for the animal path.Nagato`s summons were exclusively only to him.Sasuke or Madara or Obito can`t summon Nagato`s animals.

The rinnegan paths only gives its user the possibility to do such things, but the rest is up to the user doing the dirty work like turning your body into a living weapon or "catching" animals and impale them with rinnegan rods for summoning.