7.62x39mm, Sniper Wiki

The 7.62x39mm cartridge is a Soviet rifle round. It was used in many Kalashiknov-type assault rifles, some of which were seen in the Sniper film series.  The 7.62×39mm round was designed during World War II. It was first used in the RPD machine gun. Due to the worldwide proliferation of the SKS and AK-47 pattern rifles, the cartridge is used by both militaries and civilians alike. 7.62×39mm ammunition is purportedly tested to function well in temperatures ranging from −50 °C (−58 °F) to 50 °C (1

Arsenal, Inc. > SAM7 SERIES > SAM7SF SERIES, 7.62, milled receiver

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