Zielfeuergerät 38 Blank-Firing Training Aid
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For more details, see the full article on this by Michael Heidler:
https://www.forgottenweapons.com/light-machine-guns/zfg38-training-machine-gun/
Many thanks to the Royal Museum of the Armed Forces and Military History in Brussels for access to this very rare piece! Check them out here:
https://www.klm-mra.be/D7t/
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Forgotten Weapons
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