I am looking more at the bill that Lt. Gov. Newsom (SB63) put on the ballot and was voter approved, not by me. It includes most everything that Gov. Brown has vetoed in the past.
I think you're talking about
Proposition 63. Prop 63 did a few things, but for most of us in California there were two main effects:
1) Background checks for ammunition required as of January 2018
2) Standard capacity magazines (over 10 rounds) can no longer be possessed regardless of whether they were pre-ban or not
I mean that stuff is pretty bad, but it didn't do anything directly to semi-automatic rifles. SB-880 was the big one for semi-automatic rifles.
Yes I can understand about the stock, but does the new definition include that "when folded, it becomes in-operable" and the SU16CA also has a detachable magazine and is semi automatic which falls under the definition of AW according to the chart on the CALGuns.net site.
You probably aren't going to find the definition of "folding stock" in the Penal Code. The CA DoJ published a
guide back in 2001 that gives a definition of a "folding stock":
"A stock which is hinged to the receiver to allow the stock to be folded next to the receiver to reduce the overall length of the firearm."
It's a pretty vague definition... and on top of that it's an agency definition, not a legislature definition.
(Although I am not a lawyer and I can't speak for the DoJ) I don't think the definition applies to an SU-16A, B, or CA because the firearm is inoperable when folded. If disassembled firearms still counted, then we'd already be in trouble with the 30" OAL laws.
I look at this chart and wonder if it, (the chart), is newer than the November elections when the Newsom bill (SB63 I think) or if this definition is before the November elections.
If you're talking about
this flowchart, then no it is not current. SB-880 changed the part about "detachable magazines" to "fixed magazines", which has its own special definition. So I would be careful of the parts of the flowchart that involve magazines.
When I follow the Chart it tells me that just because it doesn't have an evil feature like a pistol grip it has all the other evil features like a detachable magazine and folding stock.
As far as off-list centrefire semi-automatic rifles are concerned, there are only three ways in which it can be an "assault weapon":
1) Does not have a fixed magazine
and has at least one "evil feature".
2) Has a fixed magazine
and that fixed magazine takes more than 10 rounds.
3) Is less than 30" long.
So detachable magazine + folding stock = "assault weapon". That being said, I will repeat that the SU-16A, B, and CA series are probably not "assault weapons" because they are inoperable when folded.
I also believe that when the law is printed, it might not state anything about a rifle being semi auto, pump, bolt, or lever action.
The law is already published
here. The rifle needs to be semi-automatic and centrefire (so feel free to mod out your 10/22 to your heart's content... within limit of other laws of course).
Maybe I am reaching because I own a home built AR15, I started with a 80% lower, I also have a Troy Pump Action Rifle as well as the SU16CA and the all have that evil DETACHABLE MAGAZINE feature but the only one that required a bullet button is the AR15.
BEEP BEEP NOT A LAWYER BEEP BEEP
Your pump-action rifle is fine. It is not semi-automatic, so it is not included within the bounds of CA PC 30515 (same reason I was considering getting a Remington 7615).
Your SU-16CA is fine. Although it does not have a fixed magazine, it also does not have any "evil feature":
It has no pistol grip
It has no thumbhole stock
It has no folding or telescoping stock
It has no grenade launcher

It has no flash suppressor
It has no forward pistol grip
This means it is not covered by CA PC 30515.
Your AR-15 may require some work, which includes (but is not limited to):
1) Needing a serial number stamped on it. Not 100% sure on this one, but
AB-857 may require that your manufactured firearm have a serial number.
2) The "bullet button" definitely won't work anymore. You have a few choices:
A- Register it as an "assault weapon"
B- Make the rifle use a "fixed magazine", or a magazine that requires the action of the weapon to be disassembled to reload
C- Remove
all your "evil features" from the rifle (like a fin over the pistol grip)
If you are worried, seek the advice of a lawyer.