They converted many of the GEW 98's from the Lange rear sight to the tangent curve in the 20's and 30's. There is a model called a Kar98B that has the 31" barrel and tangent curve sight. Tht is a long carbune. Many of the Gew 98 rifles converted to the tangent curve rear sight were used by SS units at the beginning of WW2. Does it match? I would have to see it but if the serial numbers do not match, around $200.00 would be right. The would also be numbers on the firing pin and all parts.rdj94a said:I have access to one of these, looks really good, what are the average value on these things? Looks like full military gew 1916 with flat rear sight.