The rifle in this thread is a Mauser MS350B, not an ES350B. The latter is a single shot rifle, while the MS is the much rarer repeater. The MS350B is very hard to come by in unaltered condition, a very rare piece. I have 3 of them, but they all have an extra hole here or there, or non-original sights, etc. These are great rifles. Congratulations on your acquisition!