Interestingly enough, "Karabiner" is actually German for "carbine". The Kar98k, though, has the length of a full powered rifle. The name originated from the Mauser K98, in which the Kar's design came from. The developers had shortened the Mauser design for the German Army during WWII, thus the term Karabiner came into existence. It was also given to NVA by the Soviet Union from ones that were captured. It is still being used by some rebels in the 2011 Libyan Civil War.
After the Second World War, batches of K98ks were refurbished by the Norwegian military. A new barrel in .30-06 was added, the front sight was replaced with a square post, and the German markings on the receiver and stock were removed. Norwegian markings were stamped onto the rifles. Due to the caliber change, the front receiver bridge had a small slot cut into it to accomidate the .30-06 rounds loaded from 5-round stripper clips. The magazine itself was also modified. The .30-06 versions were known as the K98k-F1 and the .308 version was known as the K98k-F2. The former remained in service with the Norwegian Army, Air Force and police until the 80s, whereas the Home Guard used them until the 90s (when it was replaced by the Kongsberg AG3). These are still very popular and quite abudant on the Norwegian market, often going for less than 1000 NOK (or ~$170).