The weapon of choice for soldiers and rebels alike, the Kalashnikov assault rifle went into mass production six decades ago.
Today, more than 100 million AK47s have been sold worldwide. Its huge success is due to its simplicity and ease of maintenance, all thanks to its Russian inventor - Mikhail Kalashnikov.
Now the man who invented it is celebrating his 90th brithday. Al Jazeera correspondent Neave Barker visited Kalashnikov's home town of Izhevsk to meet the man and the significance and consequences of his invention.