The 20E, a new machine gun unveiled by the Chinese at the 2024 Zhuhai Airshow, is a part of the 201 series and is chambered in the unique 8.6mm caliber.As the world is on the brink of a .338 revolution for machine guns, this caliber is a standout feature of the 20E.However, the specific .338 cartridge used is not specified in available information, leaving room for speculation.