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GBU-53/B StormBreaker weapons mounted beneath an F-15E during weapons evaluation.

Program · United States · U.S. Air Force

GBU-53/B StormBreaker (SDB II)

GBU-53/B StormBreaker (SDB II) · Production · U.S. Air Force

Updated
ProductionU.S. Air Force
Contract obligations
$3.79B
Since FY2008 · 2 companies
Prime awards
97
Coded to this program
Contractors
2
Largest: RTX

Cost to the Government

Compare platform costs →

Program totals · 3

  • Gross procurement request373 weapons plus containers, testing, support and obsolescence. Broader scope than recurring AUR hardware.
    Air Force
    FY2027 Missile Procurement, Air Force: discretionary and mandatory requests U.S. Air Force · Apr 2026 · figure FY2027
    $194.509MNominal $; source budget basis
  • SDB annual RDT&E referenceR-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.
    Air Force
    FY2027 R-1: Research, Development, Test & Evaluation Department of Defense Comptroller · Apr 2026 · figure FY2027 total request · PB2027
    $25.497M / yrNominal $; source budget basis
  • R&D program totalA lifetime program R&D total was not established. Development contracts and shared program budgets are not substituted for that total.
    Source not recorded
    Not established

Unit costs · 1

  • All-up round / weaponSDB002 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.
    Air Force
    FY2027 Missile Procurement, Air Force: discretionary and mandatory requests U.S. Air Force · Apr 2026 · figure FY2027 request
    $274,000Nominal $ · source budget basis

Quantities · 2

  • Requested weaponsAir Force only; excludes separate Navy procurement. Not inventory.
    Air Force
    Air Force posture hearing: B-52 modernization and LRSO integration U.S. Congress · figure FY2027
    373U.S. only; stated source scope
  • U.S. inventoryA current U.S. inventory was not established. Annual procurement, cumulative deliveries and production capacity are not a stockpile count.
    Source not recorded
    Not established

Operating costs · 1

  • Annual operations & supportA complete, system-specific annual operating and support cost was not established. Procurement, replacement rounds and contract support are different measures.
    Source not recorded
    Not established
Earlier observations · 6

Superseded estimates and prices, each in its original scope and dollar basis.

Program totals · 3

Unit costs · 3

1R-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.

2SDB002 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.

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.

FY2027 Missile Procurement, Air Force: discretionary and mandatory requests U.S. Air Force · Apr 2026
Contracts & purchasing · 2

Ceilings, options and purchase agreements are not spending and are never added together. Obligations are under Contracts.

Contracts and purchasing
Buyer → sellerStatusValueQtySource
U.S. Air Force → RaytheonSource 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.Production award announced$345M—StormBreaker production award, January 3, 2024 RTX / Raytheon · figure Jan 3, 2024
Norway → U.S. Foreign Military Sales600 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.Proposed sale · congressional notification$293M600Norway SDB II proposed sale, notification 23-41, Congressional Record July 10, 2023 Congressional Record / DSCA · figure Jun 28, 2023
International buyers · 1
International buyers
CountryQtyStatusSource
NorwayTotal includes 20 previously covered rounds; do not add 600 and 20. Delivery not established.600Revised proposed sale scopeNorway SDB II proposed sale, notification 23-41, Congressional Record July 10, 2023 Congressional Record / DSCA · figure Jun 28, 2023

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.

What the government budgets and pays for this program, from budget justification books, appropriations, acquisition reports and contract announcements. Each figure states its dollar basis. What contractors were obligated is under Contracts.

Contracts$3.79B obligated since FY2008

Explore in Awards →

Contractors2

  1. RTX$3.76B 99%
  2. Boeing$32.5M 0.9%

Awards50

Obligations are signed USAspending prime-contract actions coded to this program, FY2008 to date, credited to the company that received each action. Obligations are money committed, not company revenue.

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