This is a list of equipment that appears in Metal Gear Solid 4: Guns of the Patriots.
Recovery items
Cigs
Brand name "The Boss", these items slightly restores Psyche when used, although they also slightly reduce Life while equipped in the process.
Muna
A medicinal herb originating from the South American Andes, using this item will slightly increase the speed of Psyche restoration when equipped.
Ration
See Ration A foodstuff used by various militairies around the world, restores 75% of Life and approximately 5% Psyche when consumed.
Noodles
A type of food consisting of long strands as well as being boiled with water. Restores 100% life, and depending on the environment, can restore either 25% of psyche or 50% of psyche (for cold environments and hot environments, respectively).
Regain
A type of energy drink. Restores 100% life, and depending on the environment, can restore either 25% of psyche or 50% of psyche (for hot environments and cold environments, respectively).
Pentazemin
See Pentazemin
Anti-depressent medicine of the Diazpalm family. Prevents hands from trembling during sniping/aiming.
Compress
Back pain reliever medicine. Temporarily increases Psyche restoration speed.
Syringe
Syringe used to decrease nanomachine control as well as restoring depleted Pscyhe in one burst. Will have unpleasant side effects and dilute when overused.
Mission support
iPod
See iPod
Listen to music files that can be found throughout the game. Some songs can have beneficial effects.
Solid Eye
See Solid Eye
Goggle that enables the Baseline Map radar function; provides basic details about enemies and "friendlies". Has Night Vision and Binoculars modes.
Camera
See Digital Camera
A camera that can take pictures to display in the Photo Album. Can also get the Beauties to strike poses as well as hunt for Ghosts. Is unlocked by using the Metal Gear MK II during the Mission Briefing cutscenes.
Metal Gear Mk. II/III
Remote mobile terminal that can be manually controlled to collect items, stun opponents, and explore environments.
Cardboard Box
See Cardboard Box
Capable of hiding from regular PMC enemies as well as Scarabs. Ineffective towards Gekkos.
Drum Can
See Drum Can
Similar to the Cardboard Box, only it also has the added benefit of rolling over enemies or rolling away for a quick escape, although using it in this method can also cause Snake to vomit.
Signal Interceptor
Used to eavesdrop on PMC radio conversations while following a Paradise Lost member to the hideout in Act 3.
Scan Plug
Portable scanner that shows the location of all enemies on a map when injected into an individual. Available at Drebins for 10,000 DP after playing 10 hours of Metal Gear Online, or by entering a password.
Bandana
See Bandana
Gives Snake infinite ammunition when equipped. Unlocked by completing Metal Gear Solid 4 without killing a single soldier (of any type), nor killing any Beauties, or by buying it from Drebin for 5,000,000 DP from second playthrough onwards. Does not affect Batteries or Suppressors, and also can cost some DP bonuses at the end of each act it is used in, as well as not allow the player to obtain the Big Boss, FOXHOUND, FOX, or Hound items.
Stealth Camouflage
Makes Snake invisible. Is ineffective towards Gekkos and Scarabs, and can still be caught if he is heard. It can also be shut off if he bumps into enemies or is hit by stray bullets. During an alert phase or when Snake is being constantly hunted by enemies, its effectiveness is vastly reduced. It is unlocked by completing Metal Gear Solid 4 without initiating a single Alert Phase, or by buying it from Drebin's Shop for 5,000,000 DPP from the second playthrough onwards.