No. To be legal, the receiver must be a type listed for prohibition by the California Department of "Justice", and it must either feature a "bullet button" (thus making it a fixed magazine rifle) or be featureless (no pistol grip, no collapsible buttstock, no forward grip, no flash suppressor, etc.).
nope, in California a rifle with a removable carteridge cannot have any of the following a conspicuous forward grip a protruding pistol grip a flash suppressor and other things (like a grenade launcher and folding/telescoping stock) since the ar-10 has pistol grips AND a removable carteridge (and usually a flash suppressor) they are illegal in the state of California.