(story)
after the fazbears fright fire springtrap hides in the alley, see his body is damage by the fire missing a arm, than spring trap hears someone coming and hides, he see two men throwing away a box holding parts of the animatronics, spring trap got a idea to use these parts to repair himself, he stole the box and use the animatronic parts, making the spring trap better than new.

( this model link) https://steamcommunity.com/sharedfi.....mp;searchtext=