Nice score. Those Balkan Capture K98s are a mixed bag. They haven't been refinished like the Russian Capture K98s, which is nice. But they tend to be in rougher condition, and the German markings are usually crudely defaced with prominent chisel marks. Still, you did very well at $100.
Quote History Quoted:
Is that a Yugo stock? Israeli? No bolt take down disk.
View Quote
Nope. It's German. It's just a late war (1944/45) stock, which has had a 1940 K98k action installed.
Starting in 1944, the Germans changed the K98k manufacturing process to omit unnecessary features and streamline production. These were known as "Kriegsmodell" (war model) K98ks. The bolt takedown disk was one of the omitted features. Instead, there was a simple hole drilled through the bottom of the cupped buttplate, which served the same bolt takedown purpose. You can see that in the last photo in the OP.
Other Kriegsmodell features included a lack of a bayonet lug, no provision for a cleaning rod, no capture screws, barrel bands that were retained by screws instead of a bandspring, and a phosphated finish instead of bluing, among a few other less noticable changes.
Most German rifle factories never fully incorporated all of the Kriegsmodell changes to the production process by the time the war ended in 1945. So you will often see late war K98ks with some standard and some Kriegsmodell features. Rifles that kept some of the original K98k features while including a few of the later changes are known as "Semi-Kriegsmodell" rifles. The stock in the OP is from a "Semi-Kriegsmodell" rifle, since it lacks the bolt takedown disc but retains the bayonet lug and bandspring.
Here's a full Kriegsmodell K98k: