There are a few virtual machines with built in C2 frameworks allowing you to start testing and skip the installation.
SANS provides a number of free resources to the community including an offensive linux distribution called Slingshot. C2 Matrix worked with SANS to release a special edition Slingshot - C2 Matrix Edition.
C2 Matrix was leveraged by the Offensive Security folks to including the following C2s into Kali 2020.2:
For more details, follow the tracker.