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Munitions

United States

Boeing

GBU-39 SDB

American small-diameter glide bomb with GPS/INS guidance and folding wings, allowing strike aircraft to carry more precision munitions per sortie and hit at standoff range.

7 operator countries

Compiled from public sources ·primary reference ↗ ·last verified 2026-07-05

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

Established · 7 operators

Status: active · ~17,000 built.

Lifecycle cost (est.)

No public unit price to model from. Why so few systems publish one →

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

Firepower

Armament, payload and guidance.

Firepower specifications
Warhead type Blast-fragmentation, shaped charge (HEAT), penetrator, thermobaric or nuclear-capable.	Penetrating blast-fragmentation (AFX-757)
Guidance How the weapon finds its target: inertial, GPS/GLONASS, active/semi-active radar, infrared, laser, TV, wire.	GPS, INS

Physical

Dimensions, weight and crew.

Physical specifications
Length Overall length including gun/probe where applicable.	1.8 m

Munition

Round type, penetration, velocity and projectile data.

Munition specifications
Round type APFSDS (kinetic sabot), HEAT / multipurpose, HE-FRAG, canister or gun-launched ATGM.	GPS-guided glide bomb
Penetration Published/estimated rolled-homogeneous-armour-equivalent penetration. Values are open-source estimates; real figures are classified.	1,000 mm RHA Top 4% of munitions
Projectile mass Mass of the projectile or penetrator assembly.	129 kg
Effective range Practical engagement range of the round.	110,000 m Top 5% of munitions

Program

Cost, production scale and operators.

Program specifications
Units built Total production run. Higher means proven manufacturing, mature logistics and spares availability.	17,000
Operator countries Number of countries operating the system. More operators means broader support ecosystem.	7 Top 6% of munitions

Specifications compiled from public Boeing and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-05.

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