Fixed that for you.
For the information of Californians who may own home built firearms there exists an identified work around. The proposed statute reads along the lines of "firearms not marked in accordance with USC *.*" Being the dufuses that California legislators are they did not look at that reference which is basically the Gun Control Act of 1968. Under that it is legal to manufacture your own firearm but it may not be sold unless you mark it according to BATFE specs which, you should look up yourself, but go something like builders name and city in letters at least .1 inch high and .03 inch deep blah blah blah ..
So the way they wrote the law, if you mark it yourself with your own serial number before January 2016 then it need not be registered.
As I understand it you need not put your own name on it but can use a fictitious name like "South Side Armory". The serial numbers must also be in English letters and numbers but no requirement exists that the number be unique so you can legally put the same number on all of your guns.
Here are some examples of serial numbers that not only meet the requirments of the law but also allow you to express your opinion of said law.
4C 65 61 72 6E 48 65 78 61 64 65 63 69 6D 61 6C
01000110 01110101 01100011 01101011 00100000 01111001 01101111 01110101
For every bad law written there will be a black market created to get around it, or a smarter lawyer to negate its effect.
:)