the Mosin Nagant was the main issue long arm of the Imperial & Soviet Russian army's from 1891-the mid 50's. it was also used by the finns, chinese,poles, north koreans, you get the idea. it's fires 7.62x54R, a rimmed cartridge about midway between between the .308 & .30-06 in power and punch.the one above has been very nicely sporterized. this is what the common issue rifle would look like.