Ammunition in CQB Hell dictates how much stopping power, armor penetration, and recoil your firearm produces during close-quarters room clears on Roblox. Selecting the right ammo modification at a weapon bench alters how your bullets interact with armored hostiles, while managing loose ammo packs keeps you from running dry before reaching the next supply terminal.
All CQB Hell Ammo Types and Tactical Effects
Ammo modifiers in CQB Hell are slotted as attachments on compatible weapons through the Weapon Attachment Machine (Weapon Upgrader). Each variant applies distinct statistical trade-offs affecting velocity, damage, spread, and mechanical reliability.
| Ammo Type | In-Game Tactical Breakdown | Key Stat Modifiers |
|---|---|---|
| Standard | Default factory cartridge baseline | Baseline stats across all standard ballistics |
| Light Ammo | Reduces overall recoil, increases maximum mobility metrics, but scales down raw base damage profiles | Lower recoil, higher mobility, reduced base damage |
| Armor-Piercing (AP) Ammo | Engineered for high penetration vectors against armored targets; negates NPC heavy armor integrity | Bypasses enemy heavy armor |
| Heavy Ammo | Delivers heavy stopping caliber; amplifies target damage output at the cost of vertical recoil dampening | Higher target damage, increased vertical recoil |
| High Grade Ammo | High-tier propellant load that optimizes velocity and eliminates firearm malfunctions | +30% bullet velocity, removes jam chance entirely |
| Explosive Ammo | High-yield rounds with localized area-of-effect detonation | High damage, small explosion radius, higher recoil/spread/jam chance, reduced velocity/fire rate |
| Incendiary Ammo | Utilized for area denial, damage-over-time (DoT) application, and structural disruption | Standard kinetic damage combined with thermal payload that ignites targets |
| Blanks | Utilized primarily for tactical training operations or signaling protocols | Completely zeroes out kinetic impact damage profiles |
AP ammo is specifically suited for breaching heavily defended target zones, as documented in weapon matrix sheets for rifles like the GV-15 and OBREZ, where regular ammo loses effectiveness against armored targets. Conversely, explosive ammunition grants raw burst damage but penalizes handling by increasing weapon spread, kick, and mechanical jam frequency.
How Ammo Packs and Vending Machines Work
Field ammunition is tracked as reserve rounds and replenished through floor loot, fallen enemies, or specialized logistics machines placed across operational sectors.
Restock Methods and Pack Sizes
- Ammunition Vending Machine (AVM): The primary stationary terminal for restocking ballistics. It dispenses five distinct pack tiers: 10, 30, 60, 90, and 120 rounds. When loading into a map, note that vending machines feature an initial delay and become clickable after approximately 30 seconds.
- Ammunition Pack (10 Rounds): A small ammo pack found in the Ammo Vending Machine, as a random drop from killed enemies, or scattered randomly in the Sawmill map.
- Ammunition Pack (30 Rounds): The standard reserve pack, obtainable from the AVM, enemy drops, and Sawmill floor spawns.
- Ammunition Pack (60 Rounds): A medium supply pack exclusive to the Ammo Vending Machine and random Sawmill spawns.
- Random Item Machine: A roulette-style dispenser where players spend room-clear points for a chance to receive ammunition, medical supplies, weapons, or useless crumpled paper.
You earn 1 point for every room cleared, which allows you to purchase supplies from these vending stations during your run.
Weapon Jamming and the Gun Cleaning Kit
Weapon jamming is an active mechanic in CQB Hell that halts fire mid-engagement. Certain ammunition choices directly influence your malfunction odds:
- Explosive Ammo actively increases your weapon's jam chance.
- High Grade Ammo completely removes the jam chance, ensuring uninterrupted fire.
- Gunsmith Interface: Following game balance updates, the Gunsmith statistics area directly displays your firearm's jam chance, and jammed weapons display a red warning indicator in the GUI.
If you are running calibers with elevated malfunction rates, you can counter jamming using a Gun Cleaning Kit.
- Obtainment: Drops from defeated enemies, appears in Random Dispensers, and spawns along conveyor belts in Sawmill.
- Effect: Temporarily removes firearm jams for 100 rounds across any ammo type. Inspecting your firearm displays the remaining percentage of the "Cleaned gun buff."
- Stacking: Using a second cleaning kit does not stack the buff counter; it resets the 100-round duration back to full.
- Special Interaction: Applying a Gun Cleaning Kit to a G18 enables the ability to toggle between semi-automatic and full-automatic fire.
Equipping Ammo Attachments at Workbenches
Players cannot change ammo types on the fly from their raw inventory. Customizing ammunition requires interacting with a Weapon Attachment Machine (also referred to as the Weapon Upgrader or workbench):
- Approach the workbench found between cleared sectors or in transition areas.
- Select the compatible firearm you wish to modify, such as the GV-15, AKM, or OBREZ.
- Open the Ammo Info tab in the modification menu.
- Select your desired cartridge type (such as AP, Light, Heavy, or High Grade) to alter the weapon's ballistic profile.
Note that in the Randomizer game mode, the developer patch removed the attachment and gunsmith tables entirely; weapons in that mode drop with pre-randomized attachments instead.
Frequently Asked Questions
What does High Grade ammo do in CQB Hell?
High Grade ammo increases bullet velocity by 30% and completely eliminates the chance of your weapon jamming.
Where can I get extra ammo packs during a mission?
Ammo packs can be purchased at the Ammunition Vending Machine in packs of 10, 30, 60, 90, or 120 rounds. You can also pick up 10-round and 30-round packs dropped by eliminated enemies or discover them as loose loot in the Sawmill biome.
Why did my gun stop firing in the middle of a room?
Your firearm likely jammed, which occurs at random or at higher frequencies when firing Explosive Ammo. Jams show up red on your interface. You can prevent jams for 100 rounds by applying a Gun Cleaning Kit or equipping High Grade ammo.
Does Armor-Piercing (AP) ammo do more damage to regular enemies?
AP ammo is engineered to bypass NPC heavy armor. Against unarmored targets, database damage matrices show it deals standard lethal or high damage, but its primary purpose is neutralizing heavy body armor rather than maximizing baseline unarmored damage.
