ROMANIAN RPK RIFLE-BFPU https://gunsbuyerusa.com/product/romanian-rpk-rifle-bfpu-2/ Romanian RPK Rifle Battlefield Pick Up Style, 7.62 X 39 Semi Automatic Rifle by Atlantic Arms MFG. The original MD 64 RPK’S were built by Fabrica de Arme Cugir as the Puşcă Mitralieră Model 1964 and intended to be a light squad machine gun. The MD 64 RPK operating system is the big brother to the AK-47. They both use the same 7.62 x 39mm ammunition. The design is the same as the Kalashnikov series but the RPK has been beefed up to increase effective range and accuracy. The addition of a heavier and longer barrel helps maintain accuracy when increased barrel temperature from extended periods of rapid fire would normally be an issue.