The Gun Club is a line of hats that has included a wide range of hat styles. Most hats don’t have a dedicated name for small variations within a style (e.g., a dimensional brim fedora is just a fedora, a 5 1/2” crown fedora doesn’t have a different style name than a 6” crown fedora, etc.). Your Gun Club is a stingy brim with the crown shaped/creases/bashed into. Pork pie style. If you like this style you are in luck as they are fairly common and don’t usually sell for too much.