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Shvak 62mm
Figure 4-4. 7.62-mm Shkas Flexible Machine Gun. field stripped.

bench. Maximum use was made of semi-skilled labor with a minimum of fine gaged machine tool work. The need for spare parts was reduced by rugged construction of the original components.

For the sake of economy, very low standards of finish were purposely used, resulting in a gun unrefined in appearance and with only a moderate degree of intcrchangcability. Finish was considered secondary to ease of manufacture. The routrh sur-

faces do not indicate lack of skill or facilities for high-grade production.

The Shkas continues in use today. It has been observed in action in the Korean Operation and is known to be in servicc in the Air Forces of various Soviet satellites. Figures 4 5 and 4-6 show a fixed version of the Shkas which was captured from the North Koreans by United States Forccs.

Shvak Automatic Guns. The Shvak 20-mm automatic cannon, the first of its kind, appeared for the first time during the earliest days of World War II. It was originated by Boris Gabrielovich Shpitalny and S. V. Vladimirov. The gun was brought into being by desperation rather than by forethought. It Is a scalcd-up version of the 7.62-mm Shkas machine gun. The similarity is confined to the basic principles of the feed mechanism and the operating mechanism. It Is noticeable that for the reason of either economy or lack of ideas, the Soviets followed the practice of scaling up rifle caliber weapons.

A 12.7-miri machine gun along the same lines was made at the same time. This gun was dropped, however, because it complicated the ammunition supply. The original Dcgtyarcv cartridge was supplied without the rim; to add a rim to this cartridge



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