However, neither scope proved to have enough magnification or field of vision to be especially useful, and production was ceased shortly after it began. Both scope had a rather unique periscope arrangement which allowed the Objective of scope to be rotated out of the way, when not in use. The K31/42 was fitted with a 1.8x sight, while the 31/43 was fitted with an improved 2.8x sight. In addition to the optics, a short range (700m) iron sight was mounted on top of the scope. The scope was mounted to the left side of slightly modified K31's.
The Swiss liked the low mounted Kern scope, as it helped keep the shooters head down, thus limiting his exposure to enemy fire. However, it wasn't until 1940, that they found a satisfactory scope. The Swiss began experimenting with scope rifles in 1918. Iron: 2 Tangent-leaf sights One on the scope graduated to 700m and nne on the Sights - Optical: (Model 31/42) 1.8x optical sight (Model 31/43) 2.8x optical sight Ī close-up view of a K31/43's receiver and scope The total production run was 528,230 carbines, beginning in 1933 and ceasing in 1958. K31s were still found with some Swiss Military units, well into the 1970s. The K31 stayed in front line service until 1958, when it was replaced by the Stgw57. The K31 was adopted in 1933 and replaced all previous rifles and carbines. The shorter bolt also allowed for faster operation of the action. Additionally, the locking lugs were once again repositioned, this time to allow the bolt to lock into the receiver ring. The bolt was shorter, which allowed for a longer barrel and a longer sight radius without significantly increasing the overall length of the rifle. While externally similar to the 1911 Carbine, the action of the K31 was both simpler and stronger. Sights - Tangent-leaf sight graduated to 1500mīayonet: Models 1899/18, 1918, 1918/ Pioneer (Sawback) K31 Carbines with telescopic sights (sniper versions)Ĭutaway K31s (running backwards?), last number 519970Ĭarbine series ordered by KTA, delivered by W+F for special purposesīarrel Length - 25.65 inches: 4-groove, RH, concentric rifling, 1 in 10.63Ĭapacity - 6 round detachable box magazine K31 Carbine series, ordered by KTA for KMV Model 1931 serial number allocation, valid after November 1, 1952
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