The Terrible Tinkers of the Ruined Reaches

Objectives
Slay Bingham Gadgetspring in the Ruined Reaches, along with 4 Netgun Gnomes and 6 Zapper Gnomes.
 * slain
 * slain x4
 * slain x6

Description
Scoundrels! Infidels! Ever since I started my operation here in Azshara the Gadgetspring family has hampered my studies and sabotaged my research. And now a mob of middling, second-rate tinkers have rallied to their aid! I have pressing business to attend to: see to it that those gnomes are finished for good.

Head to the Ruined Reaches on the coast, south of my Secret Lab, and start rolling some of their disproportionately enormous heads for me.

Rewards
You will receive:

Progress
I trust you've dug a significant number of tiny graves along the coast, yes?

Completion
Oh - marvelous. Tell me more. And that precocious young Gadgetspring? Dead as well? Ah, wonderful. My work here is important but at times I do miss the carnage of demolishing my enemies on a more personal level. Here, perhaps you can make use of some of my discarded equipment.