The Type 44 Mosin-Nagant carbine was used by the VC and NVA in Vietnam.  Most guns were Chinese manufacture.  The Type 44 is identified by the folding spike bayonet along side the barrel.  Some folks may have called it the AK-44, but this carbine design dates to 1891.  It is certainly no Kalashnikov -- M.T. Kalashnikov wasn't even born when the Model 1891 Mosin-Nagant was adopted for the Czar's Russian Armies.  The Type 44 carbine came out in 1944 as a short rifle for cavalry, engineer, and other troops.  It is not a pleasant gun to shoot because if its light weight and the powerful 7.62x54R cartridge.  I shudder when I think of some poor Vietnamese trying to shoot this beast.  It must have been like being attacked by a gorilla with a ball bat.