Let's just say CA's AWB is less than effective.
Connecticut's is even more stupid.
Before April of 2013, Connecticut still had in force an AWB that pretty much mirrored the old federal AWB: limit of two "evil" features. On an AR-pattern rifle, the pistol grip and the detachable magazine are the two, so no flash hiders, no folding/telescoping stocks, no bayonet lugs, no vertical forward grips, etc.
I have a friend in Connecticut who owns a pre-ban AR, which was (and is) grandfathered in Connecticut but had to be registered. Since it's already registered, he didn't have to register it again. Now that Connecticut has reduced the limit of "evil" features to one AND required that all previously owned ARs (and similar firearms) be registered, I was commiserating about the plight of all the post-ban AR owners who had to register their "assault weapons."
My friend pointed out that this actually opened a lot of doors. Previously, it was illegal in Connecticut to import or to make an "assault" weapon. Only those pre-ban firearms that were registered were legal. As my friend rather succinctly expressed it, "Now that they're all registered as 'assault weapons' we can do anything we want with them. It's an assault weapon, so adding some more features can't make it any assaultier."
Unintended consequences ... the predictable result of people who don't know anything about guns presuming to write laws about guns.