Oh really?
Can you give one to a teammate?
Can you dual wield them?
No, there is 0 in-game benefit to having any more than a single Gjallarhorn, so not a single person gives a shit if you have 2, 3, or 69.
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I had 6. 2 were dismantled into nothing. 2 were turned into exotic shards. 2 have been kept