WW2 and post War Military Training Air Rifles :
VZ47 - Czech Military and Police .175 b.b. air rifle , looks like a Mauser K98 .Bolt pulls back to cock internal spring
Bonna - German short Carbine - .175 b.b air rifle , bolt pushes forward to cock internal spring. Rare carbine version
Reasonable offers if other Airguns for Swops are considered ..