How about Dog? John Wayne's dog's name was Dog, can't remember which movie though.
If he eats alot call him Belt Fed.
That was in the movie "Big Jake". Considered by some critics to be the most violent movie The Duke ever made.
Whatever. Great movie, in my opinion.
Since I couldn't find a firearms related name I liked, in true Texas spirit I have dubbed him "Shiner".
Big Jake and Hondo. Big Jake is the greatest John Wayne movie ever. also the 1st one I ever saw.