Photo: William Lewis · Public domain (PD-USGov) · Full source frame retained; resized without upscaling and encoded as WebP.
Timeline
No milestones recorded for StormBreaker yet. The timeline fills in as unveilings, tests, contracts and deliveries are sourced.
Cost to the Government
Munitions · RTX / Raytheon
GBU-53/B StormBreaker (SDB II)
Air Force all-up-round estimates isolate the weapon from containers, production support and obsolescence spending.
Air Force all-up round / weapon
$274,000
FY2027 request · Nominal USD · source budget basis
SDB002 P-5 recurring AUR estimate, rounded to thousands. Separate weapon containers and support excluded. FY2025 quantity has an internal correction note, so no FY2025 per-unit value is derived from totals.
U.S. Air Force ↗U.S. inventory
Not verified
A current U.S. inventory was not established. Annual procurement, cumulative deliveries and production capacity are not a stockpile count.
Air Force requested weapons
373
FY2027 · U.S. only; stated source scope
Air Force only; excludes separate Navy procurement. Not inventory.
U.S. Congress ↗R&D program total
Not verified
A lifetime program R&D total was not established. Development contracts and shared program budgets are not substituted for that total.
Cost & funding breakdown
Air Force gross procurement request
$194.509M
FY2027 · Nominal USD; source budget basis
373 weapons plus containers, testing, support and obsolescence. Broader scope than recurring AUR hardware.
U.S. Air Force ↗Air Force SDB annual RDT&E reference
$25.497M / yr
FY2027 total request · PB2027 · Nominal USD; source budget basis
R-1 PE0207327F Small Diameter Bomb. Annual appropriation, not lifetime development. FY2026 includes listed reconciliation spend-plan funds; FY2027 is requested funding. Shared scope; cannot be attributed solely to this product.
Department of Defense Comptroller ↗Falling quantities can raise the program average
The FY2027 budget requests 373 Air Force weapons and retains support and obsolescence costs. Its gross program average is substantially broader than the $274,000 recurring weapon estimate.
Operations & sustainment
Annual operations & support
Not verified
A complete, system-specific annual operating and support cost was not established. Procurement, replacement rounds and contract support are different measures.
Cost over time · 6 observations
Each row retains its original scope and dollar basis. Changing quantities, service life and inflation can change the estimate without changing the price of building one unit.
| Observation | Measure | Amount | Dollar basis | Evidence |
|---|---|---|---|---|
| FY2025 · PB2027 | Air Force all-up round / weapon SDB002 P-5 recurring AUR estimate, rounded to thousands. Separate weapon containers and support excluded. FY2025 quantity has an internal correction note, so no FY2025 per-unit value is derived from totals. | $239,000 | Nominal USD · source budget basis | U.S. Air Force ↗ |
| FY2026 · PB2027 | Air Force all-up round / weapon SDB002 P-5 recurring AUR estimate, rounded to thousands. Separate weapon containers and support excluded. FY2025 quantity has an internal correction note, so no FY2025 per-unit value is derived from totals. | $265,000 | Nominal USD · source budget basis | U.S. Air Force ↗ |
| FY2027 request | Air Force all-up round / weapon SDB002 P-5 recurring AUR estimate, rounded to thousands. Separate weapon containers and support excluded. FY2025 quantity has an internal correction note, so no FY2025 per-unit value is derived from totals. | $274,000 | Nominal USD · source budget basis | U.S. Air Force ↗ |
| FY2025 actual · PB2027 | Air Force SDB annual RDT&E reference R-1 PE0207327F Small Diameter Bomb. Annual appropriation, not lifetime development. FY2026 includes listed reconciliation spend-plan funds; FY2027 is requested funding. Shared scope; cannot be attributed solely to this product. | $29.047M / yr | Nominal USD; source budget basis | Department of Defense Comptroller ↗ |
| FY2026 total enacted / spend plan · PB2027 | Air Force SDB annual RDT&E reference R-1 PE0207327F Small Diameter Bomb. Annual appropriation, not lifetime development. FY2026 includes listed reconciliation spend-plan funds; FY2027 is requested funding. Shared scope; cannot be attributed solely to this product. | $24.575M / yr | Nominal USD; source budget basis | Department of Defense Comptroller ↗ |
| FY2027 total request · PB2027 | Air Force SDB annual RDT&E reference R-1 PE0207327F Small Diameter Bomb. Annual appropriation, not lifetime development. FY2026 includes listed reconciliation spend-plan funds; FY2027 is requested funding. Shared scope; cannot be attributed solely to this product. | $25.497M / yr | Nominal USD; source budget basis | Department of Defense Comptroller ↗ |
Contracts & purchasing · 2 records
Award values, ceilings and purchase agreements have different meanings. These records are not added together as total spending.
2024-01-03 · Production award announced
U.S. Air Force → Raytheon
$345M · quantity not established
Source states more than 1,500 weapons; an exact quantity is not supplied and the contract is not divided by 1,500 to claim a precise unit price.
RTX / Raytheon ↗2023-06-28 · Proposed sale · congressional notification
Norway → U.S. Foreign Military Sales
$293M · 600 units in scope
600 total SDB II rounds in the revised case, including 20 in the earlier below-threshold case plus 580 added. Includes support; not a confirmed delivered order.
Congressional Record / DSCA ↗
Connected missiles & systems
Weapon integration
F-15E Strike Eagle →Air Force and Navy aircraft integration have distinct funding and fielding scopes.
U.S. Air Force ↗RTX / Raytheon ↗Weapon integration
F/A-18E/F Super Hornet →Air Force and Navy aircraft integration have distinct funding and fielding scopes.
U.S. Air Force ↗RTX / Raytheon ↗
International buyers
Norway · 600 · Revised proposed sale scope · 2023-06-28
Total includes 20 previously covered rounds; do not add 600 and 20. Delivery not established.
Congressional Record / DSCA ↗
Coverage & open research
- Current U.S. inventory and complete annual operating-and-support costs require additional public evidence.
- Buyer records are selected examples, not a complete global order book.
Unit costs and contract unit prices for this system, and budget figures for the programs that buy it. Each figure states its dollar basis and links its source; contract values are under Programs & awards.