Receiver marked MOD.98 DOU.45
Left side rail marked CESKOSLOVENSKA  ZBROJOVKA, A.S. BRNO
Small Czech Rampant Lion also stamped on left of receiver

Receiver marked with serial number and small Czech Lion proof
Left side rail marked CESKOSLOVENSKA  ZBROJOVKA, A.S. BRNO
Bolt marked with matching serial number

Correct German sling for K98k

Stamped steel trigger guard floor plate assembly

Large winter trigger guard

Threaded muzzle on one of these guns
Flash suppressor?