Serial number RO621 identifies this used Mosin Nagant Model 1953, a bolt-action rifle in 7.62mm Russian, 7.62x54R. It is a four round rifle, and the barrel length should be measured on arrival. No case is included, and the finish is listed as other.

A four round capacity may point to a different style of magazine or a reworked rifle. Old and new rifles alike reward a simple routine of cleaning, a light coat of oil on the metal and a dry place to sleep between trips. A good sling makes any rifle of this type easier to carry, and a padded buttpad helps if recoil bothers you.

What can be said is that the Mosin is a very strong bolt action and shoots a powerful, rimmed cartridge that is available in surplus loads and modern hunting loads. If you are building a low-cost bolt-action rifle, this is a sensible place to start.

Treat it as a project and a plinker. It is sold as described, and it ships to a licensed dealer of your choice. The background check is completed there.