rifle length gas

The Dragunov sniper rifle (formal Russian: Сна́йперская Винто́вка систе́мы Драгуно́ва образца́ 1963 года, Snáyperskaya Vintóvka sistém'y Dragunóva obraz'tsá 1963 goda (SVD-63), officially "Sniper Rifle, System of Dragunov, Model of the Year 1963") is a semi-automatic sniper/designated marksman rifle chambered in 7.62×54mmR and developed in the Soviet Union.
The Dragunov was designed as a squad support weapon since, according to Soviet and Soviet-derived military doctrines, the long-range engagement ability was lost to ordinary troops when submachine guns and assault rifles (which are optimized for close-range and medium-range, rapid-fire combat) were adopted.
It was selected as the winner of a contest that included three competing designs: by Sergei Simonov, Aleksandr Konstantinov and Yevgeny Dragunov. Extensive field testing of the rifles conducted in a wide range of environmental conditions resulted in Dragunov’s proposal being accepted into service in 1963. An initial pre-production batch consisting of 200 rifles was assembled for evaluation purposes, and from 1964 serial production was carried out by Izhmash, later called Kalashnikov Concern.
Since then, the Dragunov has become the standard squad support weapon of several countries, including those of the former Warsaw Pact. China, while having produced an unlicensed copy of the SVD through reverse-engineered samples captured from Sino-Vietnamese War as the Type 79 and 85, never officially purchased or was given SVD Dragunov by the Soviets, as the Sino-Soviet split had already occurred when the SVD entered service and relations were strained between the two, halting further military cooperations and aid. Iran also produced a clone as the Nakhjir 3 (as a direct copy of the Chinese Type 79).

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  1. American123

    Seeking input: Rifle length gas system - short stroking

    I’ve already spent a good amount of time looking this up online. Have come away with a mountain of “things to consider” to see which ones might fix the issue. Thought I would also ask here: With a PSA 18” barrel upper, and a rifle length gas tube. I was experiencing failure to eject, and short...
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