Team 111 posted their cad files. I like the shooter mechanism, the durasoft roller can be found here.
West Coast Products has a great section on roller system.
http://www.wcproducts.net/rollers-hubs
Competition Robot Parts has some interesting drum rollers.
Rev Robotics has some good prices.
http://www.revrobotics.com/ftc/
More shooter and loader rollers:
https://www.mcmaster.com/#2477K37
https://www.mcmaster.com/#2477K33
Shaft collars
https://www.mcmaster.com/#shaft-collars/=19llhcd
The ultrasoft material was used for the shooting hood:
https://www.mcmaster.com/#standard-adhesive-back-neoprene-foam/=17zo2ol
Mr. McTavish 