Of all the weapons in the vast Soviet arsenal, nothing was more profitable than Avtomat Kalashnikova model of 1947, more commonly known as the AK-47, or Kalashnikov. It's the world's most popular assault rifle. A weapon all fighters love. An elegantly simple 9 pound amalgamation of forged steel and plywood. It doesn't break, jam, or overheat. It will shoot whether it's covered in mud or filled with sand. It's so easy, even a child can use it; and they do.