Full Gun Guide (Ignore where it says got it and the class)

Assault Rifles

Hammer Buster - McNally, The Dust (Mission: The Bane) GOT IT (Psycho)
KerBlaster - Midge-mong, Southern Shelf
Madhous! - Mad Dog, Lynchwood
Shredifier - Bonehead 2.0, Arid Nexus
Veruc (Slag) - Mobley, The Dust
Pistols

Gub - Laney, The Fridge
Gunerang - Rakk Man, The Fridge
Hornet - Knuckledragger, Southern Shelf
Infinity (Caustic) - Doc Mercy, Southpaw Steam & Power (Side Mission: Medical Mystery) GOT IT (PSYCHO)
Logan’s Gun - Wilhelm, Snowblind Defile (Mission: A Train To Catch)
Maggie - Mick Zafod, The Dust (side with Hodunks)
Thunderball Fists - Captain Flynt, Southern Shelf GOT IT (ASSASSIN)
Unkempt Harold - Savage Lee, Three Horns
Rocket Launchers

Badaboom - King Mong, Eridium Blight
Bunny - Chubby enemies
Mongol - Dukino’s Mom, Lynchwood
Norfleet - Vermivorous the Invincible, Tundra Express and Caustic Caverns
Nukem - Black Queen, The Dust
Pyrophobia - Incinerator Clayton, Frostburn Canyon (Mission: Cult Following - The Enkindling)
Shotguns

Conferance Call (Fire) - The Warrior, Hero’s Pass
Deliverance - Tumba, Wildlife Preserve
Flakker - The Warrior, Hero’s Pass
Sledge’s Shotgun - Smash Head, The Fridge
Striker - Old Slappy, The Highlands - Outwash
Sniper Rifles

Invader - Saturn, Arid Nexus - Badlands (Mission: Data Mining)
Longbow - Badass Creeper, Caustic Cavern
Lyuda (Slag/Shock) - Gettle, The Dust GOT IT (PSYCHO)
Pitchfork (Fire/Slag/Caustic) - Terramorphous, Terramorphous Peak
Skullmasher - Son Of Mothrakk, Wildlife Preserve
Volcano - The Warrior, Hero’s Pass
SMG

Baby Maker - Madame Von Bartlesby, Tundra Express/ Mad Dog, Lynchwood GOT IT (Psycho)
Bitch - BNK3R, The Bunker (Mission: Where Angels Fear To Tread)
Emperor - The Assassins, Southpaw Steam & Power
Hellfire - Scorch, Frostburn Canyon / The Warrior, Hero’s Pass
Slagga - Hodunk, The Dust
Shields

Black Hole - Foreman, Opportunity
Fabled Tortoise - Blue, Caustic Caverns
Hide Of Terramorphous - Terramorphous, Terramorphous Peak
Impaler - The Warrior, Hero’s Pass
Neogenator - Spycho, Frostburn Canyon
The Bee - Hunter Hellquist, Arid Nexus - Badlands GOT IT (PSYCHO)
The Cradle - Henry, Overlook (Side Mission: Best Mother’s Day Ever)
The Sham - BNK3R, The Bunker (Mission: Where Angels Fear To Tread)
The Transformer - Pimon, Wildlife Preserve
Flame of the Firehawk ( Cult Following- The Enkindling) GOT IT(ASSASSIN)(Psycho)
Whiskey Tango Foxtrot - Chubby enemies

Grenades

Bonus Package - Boom Bewm, Southern Shelf GOT IT (ASSASSIN) (Psycho)
Bouncing Bonnie - Loot Midgets
Fastball - Boll, Three Horns
Fire Bee - Unknown
Leech (Fire/Shock/Caustic) - The Warrior, Hero’s Pass GOT IT (PSYCHO)SS
Nasty Surprise - Vermivorous the Invincible, Tundra Express and Caustic Caverns
Pandemic - Badass Constructor
Quasar - Ultimate Badass Varkid
Rolling Thunder - Wilhelm, Snowblind Defile (Mission: A Train To Catch)
Storm Front - Rat Brothers, Bloodshot Stronghold
Class Mods

Legendary (Siren/Commando/Gunzerker/Assassin) - Vermivorous the Invincible, Tundra Express and Caustic Caverns
Slayer Of Terramorphous (Siren/Commando/Assassin/Gunzerker) - Terramorphous, Terramorphous Peak
Relic

Blood Of Terramorphous - Terramorphous, Terramorphous Peak