D
Nuclear ForcesUnited States

B61-3/-4

Nuclear gravity bombRetiredPending verification
Nuclear ForcesUSA
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Fact cardConfidence · Source
System
TypeNuclear gravity bomb
ProliferationOrigin country only
Program statusReplaced by the B61-12Med[1]
Delivery
Yield0.3–170 ktB61-3: 0.3–170 kt; B61-4: up to 50 ktMed[1]
Summary

Earlier nonstrategic B61 versions replaced by the B61-12.

Draft entry. Values come from the cited public sources and are awaiting editor verification.
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Operators
United States
Sources
  1. United States nuclear weapons, 2026, Federation of American Scientists Nuclear Notebook, Bulletin of the Atomic Scientists
    Published/updated 2026-03-01 · Tier 2 · checked 2026-11-08
Change log
  • 2026-11-08 Entry created from United States nuclear weapons, 2026 (FAS Nuclear Notebook)