well i guess i had it a little wrong...Its a commission 88 i was always told mauser 88...that was changed to what was called the s barrel. The gun was supposedly made in the 1880's but is stamped on the new barrel shroud danzig 1891. It is a 2 piece bolt it has the bolt and bolt face, a while back the bolt face was lost so my father bought a new one and had it measured by a gunsmith and he told us that is was off, but that he didn't have the ability to headspace this particular gun due to its type. He said the barrel would have to be turned...I hope this helps answer your questions. If you need to know anything else let me know if it helps i can provide pictures.