Thunderlord (Year 1)

Thunderlord is an Exotic Machine Gun. It can be obtained from the Vault of Glass or Crota's End raids, as a reward from the Weekly Nightfall Strike, as an end-of-match reward from the Crucible, from the Prison of Elders, or from Xûr.

Upgrades
Thunderlord can also be upgraded with the following perks:

Trivia

 * Pre-release, Thunderlord was demonstrated in Bungie's E3 2013 gameplay demo. In addition, its design and general philosophy were outlined in a brief news article on Bungie's website.
 * Unlike the normal Persistence upgrade, the Lightning Rounds upgrade gives the weapon three distinct "stages" of fire rate and accuracy upgrades; the second will kick in after the trigger has been held down for a short time, and the third some time after that. The third stage can only be reached before reloading if the Field Scout upgrade has also been selected.
 * This weapon has a small chance of causing enemies it kills to explode.