FIELD NOTE 01 / EQUIPMENT

How to add
attachments.

The verified route from a held firearm to a compatible sight, rail attachment, or muzzle attachment.

01 / EQUIPMENT

Quick answer

To add or inspect an attachment, hold the firearm and open its attachment inventory using the prompt shown for your current controls. Choose a part that fits that firearm’s available slot. Resupply 1.1 adds muzzle brakes, compensators, laser sights, and shotgun chokes; the patch notes do not provide a universal keybind or a complete weapon-by-weapon compatibility list.

Playing on PS5, Xbox, or controller?Check current input guidance → Prompt or attachment behavior looks wrong?Check known issues → Planning a weapon-focused Responder?Build around the firearm → Need to leave the run safely?Compare both extraction types → Need to stop infection during the run?See pills versus the cure → Protecting a developed Responder?See how Rescue Beacons work →

Verification scope: Reviewed September 26, 2026 against the official Resupply 1.1 notes. Inventory and slot rules come from NIGHTMARE; optic and suppressor descriptions come from Revelation 0.9. No cited update documents one permanent keybind across PC and console.

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Verified workflow

1. Hold the firearm whose attachments you want to inspect.
2. View that firearm’s separate attachment inventory using the current in-game prompt.
3. Match the attachment category to a slot the firearm actually provides.
4. If the weapon has a built-in attachment, use a compatible replacement rather than expecting to leave that position empty.
5. Verify the fitted part in that firearm’s inventory before returning to the run.

The exact input can differ by platform and control scheme. Follow the context prompt shown in your current build instead of an old PC-only keybind.

What changed in Revelation 0.9

Attachment	Current official description
Combat and holographic sights	Improve the ability to deliver follow-up shots.
Hunting sight	Adds effective range and accuracy to the opening shot.
Suppressors	Greatly reduce zombie perception and improve ballistic performance.

These are functional descriptions, not fixed stat values. Revelation also changed firearms broadly, so an older compatibility video may show a weapon state that no longer matches the current build.

New in Resupply 1.1

Official attachment	Variants named in the notes	What it changes
Muzzle brake	Small, Rifle	Significantly reduces recoil.
Compensator	Pistol, Rifle	Slightly reduces recoil and hip-fire spread.
Laser sight	Micro, Large	Significantly reduces hip-fire spread.
Shotgun choke	No variant specified	Improves lethality at medium range.

These are the developer’s descriptions, not measured percentages or a promise that every weapon accepts every variant. For recoil control, inspect muzzle brakes or compensators; for hip-fire spread, inspect compensators or lasers; for a shotgun’s medium-range use, check whether that shotgun accepts a choke. Confirm the actual slot and item in your current build before using one.

What the official notes confirm

• A held firearm has its own attachment inventory.
• Sights, rail attachments, and muzzle attachments are distinct attachment categories.
• Compatibility depends on the weapon’s available slots; some weapons do not accept attachments.
• An attachment already built into a weapon can be replaced, but it cannot simply be removed from that weapon.
• Revelation 0.9 describes suppressors reducing zombie perception and different optics supporting follow-up or opening-shot accuracy.
• Resupply 1.1 adds the four attachment families above, with named size or firearm-family variants where the developer lists them.

If an attachment will not fit

• Confirm that the firearm has an attachment slot.
• Confirm that the slot accepts that attachment category.
• Treat a built-in attachment as replaceable, not simply removable.
• Make sure the item and firearm behavior comes from the same current version; older videos may predate the Revelation overhaul or Resupply 1.1 additions.
• If the current game behaves differently, check the latest official patch notes before relying on this version-scoped guide.

Limits

The referenced official material does not provide a stable universal keybind, a complete weapon-by-weapon compatibility chart, attachment percentage values, or an exhaustive installation animation. Those details are not invented here.

Related guides

• Survival Mode explains the three-wave defense loop where firearm roles and resource discipline matter.
• Solo Mode explains the practice-only progression boundary.
• Responder Customization & Progression covers loadouts and version-sensitive progress.
• Builds, Skills & Loadouts turns current 1.0 systems into a coherent build checklist.
• How to Extract separates the reward and progression effects of Early and Final extraction.
• Controller Support & Keybind Reset explains why old input instructions may no longer match 1.0.3.1.
• Known Issues separates released fixes from pending launch problems.
• Resupply 1.1 records the released attachment changes and other patch highlights.
• Beyond Armageddon preserves the earlier roadmap context.

Sources

Source	Reliability	Used for
Our February NIGHTMARE Update is LIVE!	Official	Attachment inventory, categories, slot compatibility, and built-in attachment limitations.
Update Notes: Revelation (0.9)	Official	Current documented optics, suppressor, and firearm behavior.
Resupply (1.1) Update Notes	Official	Released attachment types, named variants, and qualitative effects.

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