7.5×55mm Swiss
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The 7.5×55mm Swiss or 7,5mm GP 11 is a cartridge developed for the Swiss Army. It originated from the Gewehrpatrone 1890 developed in 1889 by mechanical engineer Lt. Col. Eduard Rubin for rifles based
Two 7×57 cartridges (left) next to a 7.5×55mm / GP 11 (mid), .308 Win (right), and .223 Rem (far right)
GP 90/03 ammunition
PC 88 square flake shaped propellant used in the GP 90/23 cartridge variant
Swiss Army issue 10-round GP 11 pack
K31
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The Karabiner Modell 1931 is a magazine-fed, straight-pull bolt-action rifle. It was the standard-issue rifle of the Swiss armed forces from 1933 until 1958, though examples remained in service into t
7.5×55mm Swiss
…20th century. Besides being used in the Model 1911 and Schmidt–Rubin 1896/11 rifles, GP 11 ammunition was also used in the MG 11 machine gun, K11 and K31 carbines as well as in the Stgw 57 battle rifles. The cartridge saw extensive service until the early 1990s with the standard rifles of Swiss servicemen…
Kar. 31's straight-pull bolt action bolt group
Stripper clip inserted in Kar. 31
Tangent rear sight
Front sight post