The 4mm Randz Long, Randz Lang, Flobert Long Case or Flobert Largo, is a rimfire cartridge developed by RWS based on the 4mm Flobert Short cartridge .
The Randz Long cartridge uses a No. 7 spherical post as a bullet, the same one used in the 4 mm Flobert Short, it is not exactly 4 mm caliber, it is 4.5 mm caliber, it has the same measurements as the Randz Court, except for the The length of the pod, and logically the overall length, produces more speed than the Randz Court, and having the same bullet, it produces more impact energy. [ 1 ] [ 2 ]
The 4 mm Randz Lang, like its predecessor, is produced only in the European Union, both for this cartridge and for the Randz Court there are many weapons, from rifles and single-shot pistols, to revolvers with a capacity for several cartridges.