The recycler is a new weapon in the game. It's an explosive weapon that you can recharge by sucking up junk to replenish it's ammo.

The recycler can be found like any other weapon. There is a mythic version of this weapon that is rewarded if you are able to eliminate the spire assassin.

You will be able to find a rare version of the recycler (75 damage) around the map that you are able to upgrade to epic (79 damage) and upgrade further to legendary (83 damage) if you wish. If you're lucky an epic or legendary version could pop our of a chest or supply drop.