I couldn't find any thing on a google search that listed these, so I made one because I keep getting confused with the weapon silhouettes in the quests.
Hope it helps someone: https://i.imgur.com/29G9UbD.png
by request (2 grenade launcher version): https://i.imgur.com/up9mTq2.png
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I like how the hand cannon silhouette is just a Better Devils.