Doc's Orphan Maker is a blue unique Shotgun in Borderlands 2
You get it for doing the mission "Message In A Bottle" in the Borderlands 2 DLC: Captain Scarlett and her Pirate's Booty
Stats for sample level 50 Orphan Maker Shotgun below. You could get a different Orphan Maker Shotty based on your level. You can also get a different variation, such as the Captain Blade's Orphan Maker or Sidewinder Orphan Maker
Main Attributes
Rarity: Blue (Rare)
Type: Shotgun
Level Requirement: 50
Manufacturer: Jakobs
Value: $21,846
Weapon Stats
Damage: 39586x2
Accuracy: 76.5
Fire Rate: 16.7
Reload Speed: 1.9
Magazine Size: 2
Status Effects and Other Bonuses
"Makes Orphans Often" (red text effect)
"Curse of the Nefarious Backlash!" (blue text effect)
+850% Weapon Damage
+72% Critical Hit Damage
Consumes 2 ammo per shot