Los Santos can turn from a relaxed drive into a full firefight in seconds, and that is exactly where the GTA 5 gun code earns its place. The Story Mode phone input gives you a fast combat loadout for testing weapons, replaying missions, or building your own action scene, while players chasing extra cash can separately check buy GTA 5 Money options. The two systems should stay separate in your head: this code affects weapons, not your bank balance or long-term progress.

The loadout you actually receive

Enter 1-999-866-587 on the in-game phone, or type TOOLUP on PC. The effect supplies a broad selection of Story Mode firearms and ammunition, including pistols, submachine guns, assault rifles, shotguns, sniper rifles, a rocket launcher, grenades, and a knife. It is best understood as an instant loadout reset, not a permanent upgrade to a character's shooting skill. Franklin, Michael, and Trevor still handle weapons according to their existing abilities, so better gear won't fix poor cover usage or reckless positioning.

Phone input versus PC input

The phone method is the most consistent choice on consoles and modern versions because it avoids memorizing controller sequences. Open the phone with the directional pad, select contacts, open the keypad, enter the number, and press call. On PC, press the tilde key, type TOOLUP, and press Enter. Here's the useful reference for the related combat effects.

Use it like a sandbox tool

The best results come from activating the loadout during free roam, not halfway through a restricted mission section. Save first, then decide what kind of experiment you want to run. My quick setup looks like this.

Make a manual save before entering the phone number.
Choose one primary weapon instead of cycling through the whole loadout.
Add one modifier, such as explosive ammunition or slow-motion aiming.
Move away from your own vehicle before testing rockets or explosive rounds.
Reload the clean save when you want ordinary progression again.

Why the extra effects change the feel

Explosive ammunition is pure spectacle and works nicely for vehicle testing, but its splash damage can turn a quiet experiment into a police pursuit. Flaming ammunition gives gunfights a more cinematic look, while slow-motion aiming rewards deliberate shots rather than frantic DPS. Repeated use of the slow-motion input increases its strength through several levels before switching it off. At least in my experience, using one modifier at a time is more entertaining than stacking everything immediately because you can feel what each effect changes.

Limits, saves, and the GTA 5 Online question

This weapon input belongs to GTA 5 Story Mode. It does not add equipment in GTA 5 Online, and it does not create permanent ammunition, unlimited money, stronger accuracy, or lasting protection. The five-minute invincibility input, 1-999-7246-545-537 or PAINKILLER, can make a chaotic test easier, but it also removes much of the pressure from a normal firefight. Activated codes temporarily disable trophies and achievements for the current session, so keep a clean save available and restart or reload before chasing those rewards. If the number fails, check the digits, leave the mission area, return to free roam, and confirm that you are not in the online mode.

My recommended combat build

Start with TOOLUP, equip an assault rifle for ordinary encounters, and keep the rocket launcher for vehicles or distant targets. Add HIGHEX only after you have cleared space around yourself; explosive rounds are powerful but unforgiving. For a replay, I prefer DEADEYE because it changes decision-making instead of simply deleting danger. The gun code is at its strongest when it gives you a fresh way to read Los Santos, not when it erases every challenge. Keep money goals and weapon experiments separate, and use GTA 5 Money buy information only as a separate resource from your Story Mode loadout planning.