well that depends. a year ago you could have built a plain CA-legal AR for about $800~900. i spent about $1500 on mine with the upgraded parts. now that the liberals took over, you can add several hundred dollars to that. and thats if you can even find the parts these daysEleven Bravo;2650812;2650812 said:nice. how much would it cost to build one legally in our state? thanks