Looks like a HzA German reissue/rework. They likely modified the follower to act as a bolt stop, blued the bolt and numbered most of the components. Condition is very nice. Was a time the Wz29s which were sent to Spain as reparations in the 1930s and later surplussed out in the 1980s, were both common and cheap. Many got butchered into sporters. The stock hardware and fittings were not hard to find. They still turn up and if you find the right one, may cost you a few hundred dollars now. However, since the stock is cut ahead of the rear barrel band on the rifle you pictured, one could splice on a donor stock front end after rebating the target stock to the center of the RBB (thus concealing the splice location). The rifle you picture is well worth buying and has much potential (and value) for restoration...