FAQ

All numbers come from official Treyarch patch notes published on callofduty.com/patchnotes. We don't datamine and we don't speculate. If Treyarch hasn't published it, we don't carry it as a high-confidence entry.

Within 24 hours of a patch landing, usually faster. We monitor the official patch notes feed and ingest each new multiplayer note as it goes live. The build date in the site footer reflects the most recent ingest.

Two reasons. Either the weapon was added in a patch we haven't ingested yet (rare, usually under 24 hours), or it's a Warzone-only or Zombies-only weapon and falls outside our scope. PatchDelta is multiplayer-only. If you think a multiplayer weapon is missing, email us.

Slugs are the public identity of each item. We use lowercase hyphens end-to-end so URLs are stable, readable, and don't break on case-sensitive servers. Underscore or mixed-case variants don't redirect — they 404 by design, to keep one canonical URL per weapon.

Direction labels for a single change. Buff means strictly better for the player. Nerf means strictly worse. Mixed means both inside one entry, like damage down and range up. Qualitative means a change with no published number, tagged with direction from context. See /methodology for worked examples.

When Treyarch substantially restructures a weapon, the cumulative baseline resets at the rework patch. The post-rework weapon is treated as a fresh entity, not as continuing deltas from the pre-rework version. The patch where the rework happened stays in the changelog with a rework tag.

No. Attachment-level changes are tracked in the changelog but do not roll into the base weapon's cumulative numerical delta. Pulling them into the base would conflate the gun with one specific build.

When Treyarch hasn't published an explicit MP note for a change we believe is real — community-reported, observed in-game, or datamined — we mark the entry low-confidence and exclude it from cumulative totals until promoted. See methodology / confidence levels for the full framework.

No. PatchDelta is multiplayer-only. Warzone and Zombies have separate balance tracks and excellent dedicated communities; rolling them into MP cumulative deltas would produce misleading numbers.

Email hello@patchdelta.com with the weapon, the stat you think is wrong, the patch, and a link to the source you believe is correct. Confirmed corrections ship within 48 hours.

No. PatchDelta is independent and unaffiliated. Call of Duty and Black Ops are trademarks of Activision Publishing, Inc. We have no studio relationship, no early access, and no NDA.

Not today. The site is statically generated from a JSON dataset; if you have a use case that would benefit from a public feed, email us and we'll consider it.