"[In] 1944 Russian engineer Mikhail Kalashnikov, supported by a design team, began a competitive development against several other weapon producers to create a new selective-fire rifle that would use the intermediate round. It was a long process, and it should be noted that Kalashnikov himself was not the only key individual behind the design. Another central figure was Aleksandr Zaitsev, who convinced Kalashnikov of the need for a major redesign to enhance reliability. Yet with the war over, in 1948 their 'AK-47' entered army trials and the following year it was adopted as the standard Soviet rifle. In 1959, it was modernized- i.e. cheapened- in terms of its production methods, the receiver being a stamped design rather than machined steel. Other improvements of the AKM, as it was known, included a basic scoop-like muzzle brake, a Parkerized bolt and a wire-cutting bayonet device. The AKM became the defining, most widely distributed model in the AK series."