From Final Fantasy Wiki

"Remodel weapons and increase their power"

—Game Instruction Manual

A Junk Shop in Balamb Town.

In Final Fantasy VIII characters may sometimes receive items such as rods or screws after winning a battle. Not useful in themselves, these items or parts can be taken to a Junk Shop where, together with the proper specifications found in Weapons Monthly Magazine issues, they can be used to modify and upgrade a character's current weapon for a fee.

The Junk Shop serves as the game's Weapon Shop from previous Final Fantasy games, offering a list of weapon advancements for each character.

Junk Shop is also an ability learned by Doomtrain, which allows the player to visit a Junk Shop anywhere in the game. This is necessary for Disc 4, as all towns are inaccessible, and therefore visiting a Junk Shop would be impossible unless the player had completed the CC Card Group sidequest earlier in the game.

Items Used in Junk Shops