|The subject of this article was removed from World of Warcraft in patch 4.3.0.
Coilfang Armaments was the reputation grind quest for the Cenarion Expedition. You must have already completed the now removed quest  .
drop from all manner of Naga in The Steamvault, in Slave Pens (only in heroic) as well as from Mobs in Serpentshrine Cavern. You can continue turning them in until Exalted. For more information on the reputation grind for the Cenarion Expedition, see that article.
We will forge the naga's own steel into weapons to use against them. Bring me all the armaments you manage to salvage from Coilfang Reservoir.
Excellent work, <name>. The naga will learn not to underestimate us.