NitroX
I had a Tikka 12/222. It had one hammer with a bbl selector.
It was scoped. The 222 bbl was on the bottom and there was a muzzle break of sorts for the rifle bbl only. The rifle shot very well, 5 shot groups were well under one inch.
If you get one I think I still have a set of scope mounts. The reciever is grooved and they slide on from the rear. The shotgun bbl shot slugs good too.