The dumbbell military press is a great shoulder exercise. it’s also a compound exercise which hits the triceps, deltoids and trapezius. Using the dumbbell vs using the barbell you get more range of motion with the dumbbells than you do with the barbell.
While John Wayne used many Colts in his movies. One of his personal guns, Wayne gave the Colt to Gary Hess who worked for his gas and oil exploration company, DECO. The maker of the Duke& holster rig remains a mystery.