I must confess, the reason for every component of my left handed BAT action rifle is simply that the builder(Russ Haydon) used BAT actions and recommended every other component, except the Kelbly HCFB stock, which was my choice. The choice to have it built for 222 Remington was a collaborative decision between Russ and me. If I could have bought a similar left handed rifle used, only needing a barrel, I would have done so. I also might have saved a lot of money, especially considering I decided organized competition is not my cup of tea.
There are always fine rifles available in the BRC Classifieds. I suggest you look there, for options.