When did the Sako L61R Finnbear come out? Sako serial numbers 1949-? in progress Background and history of the Sako commercial rifle: The first civilian rifle bearing the Sako name was the L42 Luodikko rifle model 1942, chambered for the 7x33mm Sako cartridge, prototyped in 1942, and commercial production started after WWII as model number L46. What was the first year of the Sako rifle? Why are Sako old models no longer in production?.What is the serial number of a Sako 300 WSM?.When did the Sako L579 Forester come out?.When did the Sako L61R Finnbear come out?.What was the first year of the Sako rifle?.