This is a drawing of a long rifle with detailed mechanisms. The image features a long rifle depicted with attention to its wooden stock, metal barrel, and firing mechanism. Below the rifle, there is an enlarged illustration of the rifle's lock mechanism, showcasing details of the metal components, springs, and trigger. The drawing provides a scale notation for each depiction to show the rifle's size. The background is plain, focusing attention on the firearm and its mechanisms. The drawing is a study of the firearm's design and mechanical configuration.