Serial range prefix can be employed so far the calendar year of manufacture of the Marlin 336. It is also correct for the most other Marlin firearm Construct dates from 1946 to the present. To take advantage of further protection and for an improved practical experience on MidwayUSA, please update https://strapweaponshop.com/product/marlin-model-1895-dark-series-45-70-govt-rifle-16-25/