<P> A Kalashnikov rifle is any one of a series of automatic rifles based on the original design of Mikhail Kalashnikov . They are officially known in Russian as "Avtomat Kalashnikova" ("Kalashnikov's Automatic Gun"; Russian: Автома́т Кала́шникова), but are widely known as Kalashnikovs, AKs, or in Russian slang, as a "Kalash". They were originally manufactured in the Soviet Union, primarily by Kalashnikov Concern, formerly Izhmash, but these rifles and their variants are now manufactured in many other countries . </P> <P> The primary types of Kalashnikov rifles . </P> <Table> <Tr> <Th> Model </Th> <Th> Cartridge </Th> <Th> Year </Th> <Th> Manufacturer </Th> </Tr> <Tr> <Td> AK - 47 </Td> <Td> 7.62 × 39mm </Td> <Td> 1949 </Td> <Td> Izhmash and others </Td> </Tr> <Tr> <Td> AKM </Td> <Td> 7.62 × 39mm </Td> <Td> 1959 </Td> <Td> Izhmash, Tula Arms Plant and others </Td> </Tr> <Tr> <Td> AK - 74 </Td> <Td> 5.45 × 39mm </Td> <Td> </Td> <Td> Izhmash </Td> </Tr> <Tr> <Td> AK - 101, AK - 102 </Td> <Td> 5.56 × 45mm </Td> <Td> 1995 </Td> <Td> Izhmash </Td> </Tr> <Tr> <Td> AK - 103, AK - 104 </Td> <Td> 7.62 × 39mm </Td> <Td> 2001 </Td> <Td> Izhmash </Td> </Tr> <Tr> <Td> AK - 105 </Td> <Td> 5.45 × 39mm </Td> <Td> 2001 </Td> <Td> Izhmash </Td> </Tr> <Tr> <Td> AK - 12, AK - 12K </Td> <Td> 5.45 × 39mm </Td> <Td> 2011 </Td> <Td> Kalashnikov Concern, formerly Izhmash </Td> </Tr> <Tr> <Td> AK - 15, AK - 15K </Td> <Td> 7.62 × 39mm </Td> <Td> 2018 </Td> <Td> Kalashnikov Concern </Td> </Tr> </Table> <Tr> <Th> Model </Th> <Th> Cartridge </Th> <Th> Year </Th> <Th> Manufacturer </Th> </Tr>

How many different types of aks are there
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