If you have the semi-auto rifle, and the full-auto parts, you are considered to have the intent to manufacture a machinegun according to the feds. That is why it is best to shed or remanufacture the auto parts into semi-auto only parts AS SOON AS YOU RECIEVE THEM. This can, and will get you in a mess in a hurry if you are not careful. BATFTB has procedures for remanufacturing the parts if you write to them. See the letters to the ATF over at Weaponeer.net.
This is a Federal issue and does not have anything to do with State level laws.