Explanatory notes
… for guns, machine‑guns, sub‑machine‑guns, etc., whether or not with aiming and loading mechanisms. (2) Metal … excludes : (a) Parts of general use as defined in Note 2 to Section XV (e.g., screws, rivets and springs), of … more specifically covered by other headings of the Nomenclature, such as pull‑throughs, cleaning rods and other …