In addition to the weapons, you will also have gun cases. Unlike the first game, you don't create them. You'll have to find them somewhere in the environment - like guns, if you miss them they're gone for good. Holsters allow you to quickly switch between two guns without having to switch using your bag. They are incredibly useful, and missing a single one can hurt your experience.
All safes and locations combined | Safecracker Trophy Guide | All Training Manual Locations | Companion Trophy Guide
All gun, bomb and holster locations | High Caliber Trophy Guide
Chapter 9: Downtown
Shotgun: Found inside the Westlake Bank Tower. Enter the ruins to reach the bank hall and use the code 60-23-06 to unlock the safe. You will find the shotgun on one of the long dead bank robbers.
Pet store key: - On Spring Street, break the glass in the dining area and enter. Go through the back rooms to go to the bathroom to find this key - you need to get the Gun Holster.
Gun holster: At the bottom of 6th Avenue, you will need the Pet Store Key artifact to unlock the interior. Go through the alley marked "Barkos Deliveries" to enter the pet store. The Gun Holster is located in the front room of the office.
Paralyzing bomb: In the Barkos Pet Shop, the same one with the Long Gun Holster, find the Stun Bomb weapon on the table in the main room, in the back right corner.
Chapter 11: Capitol Hill
Trap Mine: When leaving an interior, you will reach a courtyard of a building. Across the path, use a green dumpster to climb up to the open door to the apartment balcony. The gun is in the bedroom.
Short rifle case: Go to the back alley and look for a building marked "AUTO" with a chain link fence and a green dumpster blocking the door. Move the dumpster, then use security code 30-82-65 to get the upgrade. This is the building behind the Tattoo Parlor.
Bow arrow: Do not miss. After passing through a door, an infected will attack. Kill him and check the body to get the recipe for making bow and arrows.
Chapter 25: On Foot
Hunting gun: Found in a safe after your team has left the ship. On your way to the FOB, you will pass a mobile office. Hit the window to get the safe code note, then look for a cracked wall on the right after going through an open portal. Use the code 17-38-07 to unlock it.
Chapter 28: Hostile Territory
Double barreled shotgun: Find the large building covered with an elaborate dragon fresco in China Town. Walk down the street from the store and enter the restaurant on the back left. Go upstairs and jump through, then enter a storage room. In the second room, go through the floor to enter a shop. The shotgun is behind the checkout counter.
Short rifle case: Find the truck covered with Seraph letters to the Prophet on wooden poles. Enter the office to the right of the truck and explore the back room to get this case.
Chapter 31: The Coast
Gun holster: At the start of the chapter, you will enter a warehouse with a workbench. Enter the main room and discover the small office. The case is on the desk inside.
Crossbow: Upon entering the massive ship, you won't miss this weapon. Going up the stairs, you will push a door blocked by a body holding this weapon.
Chapter 34: Descent
Flamethrower: After sliding into the hotel basement, continue until you have to jump over a gap in the ground. Cross the room and enter through the closed door on the right. It leads to a steel beam that you can walk through. There is a body with a flamethrower on the other
Chapter 44: The Complex
Silent submachine gun: Do not miss. Collected at the beginning of the chapter.
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