Probably one of the foundries that's not in the game but you can still earn the emblems from them. I doubt it would be Crux/Lomar since they specialize in explosive weapons.
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Crux/Lomar made truth
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And Gjallarhorn and Dragon's Breath.
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And they didnt bother to put tracking on dragons breath
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I'm not sure how tracking works with its new perks, I could try it with the Taikonaut though.