Wildcatter...your Sauer was likely produced 1894 to 1895 time period. I see that the barrels on your sauer were built using Sauer & Sohns Deutches Reich Patent #70343; The use of which fell out of favor by 1900 or so. Grade or Model of your Sidelock Sauer is unknown at this time as there are no known catalogs which illustrate any of the pre-WW1 Sauer sidelock models produced for the Domestic (German) market. And SDH is quite correct in that you need an Ejector fore end assy for your Sauer. The finding of which will be the proverbial needle in a haystack or perhaps more aptly put: a Needle in a hay field. Good Luk. J. Stephens