Question: The K2 is capable of firing a rimless bottlenecked intermediate cartridge derived from what cartridge?
Sentence (from "5.8×42mm"): The 5.8×42mm “heavy round” cartridge has the same dimensions as the standard 5.8×42mm cartridge, but utilizes a longer streamlined bullet with a heavy steel core for increased performance at extended ranges and penetration.
Relevant evidence: No