GTA 5's weapon phone code is at its best when you treat it like a loadout switch, not a replacement for the Story Mode progression. Dial 1-999-866-587 and you receive a broad set of firearms plus ammunition almost instantly, which is handy for mission replays, vehicle testing, police chases, or a quick Los Santos rampage; even players focused on buy GTA 5 Money can use it as a separate sandbox tool. Save before activating it, though, because trophies and achievements stay disabled for the current session.

The Main GTA 5 Gun Code

On every supported version with phone inputs, open the in-game phone, choose the keypad, and enter 1-999-866-587. The PC command is TOOLUP, entered through the command console after loading Story Mode free roam. The loadout covers the essentials: pistols, SMGs, assault rifles, shotguns, sniper rifles, a rocket launcher, grenades, and a knife. Dialing it again can refill ammunition for the weapons included in the effect, but it isn't a permanent inventory upgrade.

Phone, PC, and Mission Restrictions

The phone method is usually the least awkward option on PlayStation and Xbox because you don't need to remember a long button sequence. On PC, press the tilde key, type TOOLUP, and press Enter. From what I've seen, free roam gives the most reliable results; certain mission moments restrict phone functions or prevent an effect from activating. If nothing happens, leave the mission area, wait until ordinary exploration resumes, and try again.

Three Loadouts That Actually Feel Different

The gun code becomes more interesting when you pair it with one modifier instead of stacking every effect at once. Explosive ammunition uses 1-999-444-439, or HIGHEX on PC, and turns ordinary firearms into vehicle-testing tools with serious splash damage. Flaming ammunition is 1-999-462-363-4279, called INCENDIARY on PC, and adds spectacle without feeling exactly like explosive rounds. Slow-motion aiming uses 1-999-332-3393, or DEADEYE, and rewards careful headshots more than frantic DPS.

Do This Before You Start Shooting

A small preparation step prevents most wasted attempts. Keep a clean save, move away from your personal vehicle, and choose an open area before testing explosive or flaming rounds. I could be wrong but, in my experience, crowded streets create more unwanted police pressure than players expect. Use this quick checklist.

Load Story Mode rather than GTA Online.
Save before activating any effect.
Equip the firearm you plan to test.
Stand clear of cars, civilians, and fuel pumps.
Reload the clean save when you want normal progression again.

Quick Comparison for Story Mode

These inputs serve different purposes, so the strongest pick depends on what you want from the session. TOOLUP is the starting point for almost every experiment, while the other effects change how the firefight feels rather than simply adding more gear.

What the Code Does Not Do

TOOLUP doesn't work as a weapon shortcut for GTA Online, doesn't add permanent ammunition, and doesn't provide unlimited money. It also won't improve shooting skill, reload speed, accuracy, or weapon handling. Its value is temporary freedom: you can test a rifle, replay a favorite mission with a different build, or create a cinematic firefight without visiting a shop. For a normal campaign run, I prefer using it between missions rather than before every major gunfight, since the pressure of limited gear is part of GTA 5's rhythm. And if your next goal is building cash outside Story Mode, GTA 5 buy Money should remain separate from this temporary weapon session.