1 Federal Length Limits apply as they are the same as CA for non-AW's 16 inch barrel 26 inch overall all. Where this changes is CA measures from the most compact fireable configuration.
2 Not that I know of.
3 Not easy but I have heard it was done, but no tips given on how to do so.
Boyds makes drop in stocks now...
The above is not legal advice. It is just something you read from some dude on the internet. It does not reflect the opinion of Calguns.net. If it seems rude it was probably meant to read sarcastically.
Marlin 795 MEGATHREAD Part Deuce