60mm Brandt mortar cleaning brush

The seller had this on the table together with a LOT of gun parts and gunsmith things at Bloomsburg gun show in Pennsylvania. He had no idea about it. I took a gamble for $1. Any ideas? If it will be determined NOT AMMO related, the administator may remove my post.


Bore brush?

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My guess too, the part with bristles expands due to that spring.

BOCN member Spotter identified this item as a 60mm Brandt mortar cleaning brush. Now I need to find the rest of the thing.
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