Nova as a one piece stock and reciever. Super nova as a removable stock so you can change from comforttech stock to the pistol grip if you want. Also, the supernova as a bigger tigger guard( which helps if you are wearing gloves.) Last the Comforttech does have the different combs you can interchange and shims for the butt stock. O yeah the super is about 100 more bucks.
Novaking