Class mods that were added in knoxx dlc

probably a stupid question but are the gunfighter,peacekeeper and other coms added in knoxx dlc only obtainable from crawmerax and the armory or is there other missions/ mobs u have to farm for them.

The Circle of Duty or whatever slaughter dome in General Knoxx DLC awards it as a mission turn in on one of the rounds.

ok so Is only from that mission or can it obtained as a random drop I just assumed I could get them in armory or from craw

I never found any in the armory, so I couldn’t say for sure, but I have gotten a couple from Crawmerax, albeit maybe 1 per 50 runs, so it seems pretty rare