Mulligan is a trait in Destiny 2 that can appear on 21 weapons. An enhanced version exists on crafted and some newer weapons.
What Mulligan does
Missing a shot has a chance to return ammo directly to the magazine.
Enhanced version
Missing a shot has an improved chance to return ammo directly to the magazine.
Weapons that can roll Mulligan (21)
Whisper of the WormSolar · Sniper Rifle
1000 Yard StareVoid · Sniper Rifle
Archon's ThunderSolar · Machine Gun
BackfangArc · Glaive
Bad News XF4354Kinetic · Hand Cannon
BrayTech WerewolfKinetic · Auto Rifle
FirefrightKinetic · Auto Rifle
Nameless MidnightKinetic · Scout Rifle
Occluded FinalityArc · Sniper Rifle
Omniscient EyeSolar · Sniper Rifle
Pizzicato-22Kinetic · Submachine Gun
Planck's StrideArc · Machine Gun
Refurbished A499Kinetic · Sniper Rifle
Show of Force XF4865Kinetic · Sniper Rifle
Tears of ContritionKinetic · Scout Rifle
The DominoSolar · Sniper Rifle
The Steady HandKinetic · Hand Cannon
TigerspiteKinetic · Auto Rifle
Twilight OathSolar · Sniper Rifle
Watchful EyeArc · Machine Gun
Watchful Eye (Adept)Arc · Machine Gun