Okay, the Advent Calendar is swerving madly all over the Star Wars world by giving us another build, like yesterday, that isn't from any movies.
Day 4 sees a Republic Fighter Tank as I was pretty sure was seen in Episode III, but according to the Star Wars wiki page, it's only showed up in games, books, and animated shows.
It's perhaps as good a model as one can expect given the 23 or so pieces in it.
LEGO released a large build of this last year, and I always thought it looked pretty good, but not something I wanted, so I don't have one.
So, here it is:
And it came with a spare turret, which are good to have around as extras to spice up other models that could use an antenna, or a laser cannon, or a bzzzzt thing.