Gewehr 98 to K98k: what actually changed

The Gewehr 98 of 1898 set the large-ring Mauser action that still defines the family. The Kar 98a of the First World War shortened the rifle for mounted and specialist troops. The Karabiner 98k, adopted in 1935, is the standard German service rifle of 1935–45. It is easy, standing in a rack, to call every 98 a K98k. It is also wrong.

What changed

Barrel length dropped from the Gew 98’s 740 mm class to the K98k’s 600 mm class. The Lange rear sight of the infantry rifle was replaced by a tangent sight on the K98k. The bolt handle was turned down. The sling moved to the side of the stock. The stock became a k98 pattern with a cupped buttplate as production matured, and later a laminated blank. The cleaning rod and band arrangement were revised. The Kar 98a is a third shape: carbine length, stacking hook, different band.

What did not

The controlled-round-feed 98 action, the charger guide, and the 7.92×57 cartridge remain. A collector who understands those constants can see the K98k as a 1930s answer to the same tactical problem the Kar 98a tried to solve in 1908–18: a handier rifle without giving up the 98 bolt.

If the bolt is straight and the sight is Lange, you are not holding a K98k.

Training rifles in .22 — DSM 34 and KKW — copy the outline so that the hold and the sight picture transfer. They are not shortened battle rifles. Keep them in the training series.

Lay a Gew 98, a Kar 98a, and a K98k on the same cloth. Length and sling position do the teaching.