United States Raytheon (RTX)
GBU-53/B StormBreaker (SDB II)
American tri-mode seeker (millimeter-wave radar, imaging infrared, semi-active laser) small-diameter glide bomb built to hit moving targets in adverse weather.
In service since 2020 · 1 operator countries
Compiled from public sources ·primary reference ↗ ·last verified 2026-07-05
💲 ≈ $195,000, US$195,000 per unit (2021 US Air Force); US$220,916 (2021 US Navy).
Procurement snapshot
Availability & export
US ITAR-controlled
Export needs U.S. State Dept (DDTC) approval; end-use & re-transfer restrictions apply.
Channel: Foreign Military Sales (FMS) or Direct Commercial Sale
Fielded & proven
Limited · 1 operator
In service since 2020. Status: active.
Lifecycle cost (est.)
Unit cost known; one-shot / small-arms class has no meaningful O&S tail to model.
Interoperability
No standardised NATO calibre / datalink detected in public specs.
Derived guidance from public data, export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.
Full specifications
Performance
Speed, range, altitude and engagement capability.
| Range Maximum distance: ferry range for aircraft, operational range for vehicles, maximum engagement distance for missiles. Higher means more standoff or persistence. | 74 km |
|---|
Firepower
Armament, payload and guidance.
| Warhead Warhead mass. Heavier generally means larger effect radius, at the cost of range. | 48 kg |
|---|---|
| Guidance How the weapon finds its target: inertial, GPS/GLONASS, active/semi-active radar, infrared, laser, TV, wire. | Millimeter-wave active radar homing, Semi-active laser homing, Imaging infrared, GPS-aided inertial navigation, Two-way data link |
Physical
Dimensions, weight and crew.
| Length Overall length including gun/probe where applicable. | 1.76 m |
|---|
Propulsion
Engine, power and fuel.
| Propulsion type Turbofan, turboshaft, diesel, gas turbine, solid-fuel rocket, ramjet… | Unpowered glide |
|---|
Munition
Round type, penetration, velocity and projectile data.
| Round type APFSDS (kinetic sabot), HEAT / multipurpose, HE-FRAG, canister or gun-launched ATGM. | Guided glide bomb |
|---|---|
| Projectile mass Mass of the projectile or penetrator assembly. | 92.5 kg |
| Effective range Practical engagement range of the round. | 111,000 m |
Program
Cost, production scale and operators.
| Unit cost Approximate flyaway/unit cost where public. Defense pricing varies hugely by contract, offsets and configuration. Lower is cheaper. | $195,000 |
|---|---|
| Operator countries Number of countries operating the system. More operators means broader support ecosystem. | 1 |
Specifications compiled from public Raytheon (RTX) and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-05.
Compare with rivals
See how it stacks up
Israel Aerospace Industries LAHAT gun-launched ATGM 
KBP Instrument Design Bureau 9M119M Invar gun-launched ATGM Frequently asked questions
What is the range of the Raytheon (RTX) GBU-53/B StormBreaker (SDB II)? +
The Raytheon (RTX) GBU-53/B StormBreaker (SDB II) has a maximum range of 74 km.
How many countries operate the Raytheon (RTX) GBU-53/B StormBreaker (SDB II)? +
The Raytheon (RTX) GBU-53/B StormBreaker (SDB II) is operated by 1 countries.
How much does the Raytheon (RTX) GBU-53/B StormBreaker (SDB II) cost? +
The Raytheon (RTX) GBU-53/B StormBreaker (SDB II) has an approximate unit cost of 195,000 USD. Defense pricing varies by contract, offsets and configuration, treat this as directional.
