Maskingevær m/20

The Maskingevær m/20 is a Light Machine gun, the first such weapon designed and mass manufactured in Ringerike, seeing service between 1920 and 1949, it was initially designed and fielded in two variants, one fed by a charger loading magazine sharing the charger of the service rifle of the time, and another fed by an 81 round pan type magazine. The latter was vastly favored by troops employing it, relegating the charger fed models to Home Guard service before eventual conversion or replacement.

Design
The Maskingevær m/20 features a two-part recoil system, shared with a number of Eiko Eriksen's other designs, in which the gas system compresses a recoil spring which is released to push the bolt rearwards, cycling the action which was returned into battery by a second spring.

Users
 Ringerike  New Valentina
 * Ringerike Hær: The Ringerike Army purchased both varieties of the MskG m/20.
 * Luftforsvaret The Ringerike Royal Air Force used solely the magazine fed variant.
 * Kongelig Marine The Royal Ringerike Navy purchased both varieties of the MskG m/20.
 * Valentine Military Forces: Produced under license, chambered in .256 Wexford, from 1920 to 1928. About 35,000 were made.