So I finally watched the old 2002 movie Road to Perdition and it is just a masterpiece for Sam Mendes. Very thankful to watch it. Great story, visuals, music and performances. I am now a huge Sam Mendes fan between this and 1917.
Come to find out the movie is based on a graphic novel, and that graphic novel is based on a Japanese Manga series "Lone Wolf and Cub" And, the Lone Wolf and Cub is the basis for Samurai Assassin (1980), a kind of cult movie that I loved as a kid. Mainly due to the giant showers of blood that spurted with all the head chopping.
I also think a lot of the appeal of The Mandalorian comes from a similar formula of a badass killer on the road with an innocent kid.
Link to one of the many incredible scenes:
https://youtu.be/U5418CiBukw
https://en.wikipedia.org/wiki/Lone_Wolf_and_Cub
Anyway, I wonder how many other stories use this formula a bit: True Grit? Others? I never considered it a trope, but perhaps it is.
Either way, see the movie immediately. Good use of 1911s, Colt revolvers, 1907 Savage .32, and a gauge with a proper pattern at 5 yards.