The Henry Carbine is a fictional gun, probably based on the Henry repeating rifle. It was established by German writer Karl May (who wrote in his novels about Winnetou, Old Shatterhand and Kara Ben Nemsi) as a gun named the Henry Carbine (in German Henrystutzen) after its design engineer Mr. Henry, a fictional gunsmith from Saint Louis, who gave it to his friend, later famous in the Wild West as Old Shatterhand and in Arabian countries as Kara Ben Nemsi.
In the world of Karl May's novels this repeating rifle, was capable of firing 25 times without reloading and was renowned (with its owner) throughout the entire Wild West and in Arabian countries. Because it didn't need to be reloaded often (compared to more common rifles with one or two chambers) it was considered by native Indians and Arabs as a magic rifle.