Zachary Elkins, Tom Ginsburg, and James Melton find that contemporary constitutions rarely include gun rights:
Constitutions with gun rights were reasonably well- represented in the late 1800s: 17 percent had the right in 1875. Since the early 1900s, however, the proportion has been less than 10 percent and falling. As new countries emerged in the interwar and post-World War II eras, their constitutions reflected a modern set of rights.
If arms were mentioned at all, it was to allow the government to regulate their use or to compel military service, not to provide a right to bear them. Today, only three out of nearly 200 constitutions contain a right to bear arms.
The Dish 