Yes, Min. will be a bolt head and a BBl. plus tools to change the Bbl. If you plan to get an aftermarket bbl. and if you plan to **target shoot to 500 & beyond, a new recoil lug and Bbl. nut wouldn't hurt. Also , since your 12FV has a blind box magazine set up for a 223 case you will need a larger {.473} 308 size magazine follower.
** I added "target shoot" as a classifier between target shooting and hunting and their accuracy requirements, and how you set up your rifle for either.