Thunderlord (Year 1)

Thunderlord is an exotic Machine Gun. In Year 1, it could be obtained from raids, the Prison of Elders, the Weekly Nightfall Strike, the Crucible, or purchased from Xûr for 17 Strange Coins. It can currently still be obtained as a random drop from Year 1 activities and legacy engrams.

Upgrades
Thunderlord can 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.