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The RPK entered service in 1959 as a more powerful firearm, developed from the AKM. The RPK differs from the AKM in a number of design improvements: the barrel is lengthened to increase muzzle velocity; the capacity of the sector magazine is increased to improve the combat rate of fire; the machine gun is outfitted with folding bipod to stabilize it during fire; the sight is outfitted with sliding windage mechanism to improve fire accuracy; the machine gun butt is identical to the Degtyarev RPD 44 machine gun butt. The machine gun intended for airborne troops had a folding butt.
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Characteristics
Caliber, mm |
7.62 |
Cartridge |
7.62x39 |
Sighting radius, mm |
555 |
Length, overal, mm |
1040 |
Barrel Length, mm |
590 |
Rate of fire, rds/min |
600 |
Muzzle velocity, m/s |
745 |
Magazine capacity, rds |
40-75 |
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Combat rate of fire, rds/min: single shots bursts | 50 150 |
Range, m: max bullet flight bullet killing capacity | 3000 1500 |
Machine gun weight, g w/empty magazine for 40 rds for 75 rds in firing position | 5000 5600 5600-6800 |
Empty magazine weight, g: for 40 rds for 75 rds | 200 900 |
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RPKSN with folding butt and night vision sight (1959)
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Characteristics
Caliber, mm |
7.62 |
Cartridge |
7.62x39 |
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