I know my savage axis is a .243, but what I don't know is if there is a specific "model" number other than the caliber alone? I see a lot of axis this or that online and just want to make sure I know exactly what I have before I place orders on modification parts. The first place I looked was at the basix trigger and the models are confusing. Perhaps there is a thread already created that lists or shows all cross references for parts interchangeability between savage rifles? Thanks for helping out a new guy!