Yes. The CB-RC505 is a backpack-style carrying bag made exclusively for the RC-505mkII and RC-505. The main compartment fits either unit, and the sub-compartment accommodates a laptop or tablet. The outside pocket is suitable for storing accessories such as cables, AC adaptors, and headphones.
The CB-BU10 is a utility gig bag that also accommodates the RC-505mkII and RC-505. It features a main compartment, a slim pocket for a laptop or tablet, and over ten additional areas for storing accessories.