AGM-158 JASSM Missile

Manufacturer: Lockheed Martin
Category: Missiles & Precision Weapons
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Guidance System GPS/INS with Imaging Infrared
Maximum Speed Subsonic
Launch Compatibility Fighters and Bombers
Warhead Technology Penetrating Blast-Fragmentation

Full Specifications

1. General Information

Name / Designation	AGM-158 JASSM
Type / Role	Air-to-Surface Stealth Cruise Missile
Country of Origin	United States
Manufacturer	Lockheed Martin
Service Entry / Year Introduced	Early 2000s
Operational Status	Active

2. Performance & Range

Range	370 km+ (Baseline)
Speed	Subsonic
Ceiling / Altitude Limit	Low-altitude penetration profile
Accuracy (CEP)	Precision strike with IIR guidance
Warhead Type	Penetrating blast-fragmentation

3. Guidance & Targeting

Guidance System	GPS/INS with IIR terminal seeker
Targeting Mode	Fire-and-Forget
Launch Platform Compatibility	Tactical Fighters and Strategic Bombers
Seeker Type	Imaging Infrared

4. Physical Characteristics

Length	Approx. 4.3 m
Diameter	Approx. 0.55 m
Wingspan	Approx. 2.7 m
Launch Weight	Approx. 1,000 kg
Propulsion	Turbofan engine

5. Warhead & Payload

Warhead Weight	Approx. 450 kg
Explosive Type	Penetrator warhead
Detonation Mechanism	Impact or delay fuse
Payload Options	Conventional

6. Operational Use & Capabilities

Operational Range Type	Long
Deployment Platform	Air-Launched
Target Types	Fortifications, infrastructure, air defenses
Combat Proven	Yes
Users / Operators	United States, Select Allies

Our Rating

The overall rating is based on review by our experts

Technology 9 / 10
Performance 8 / 10
Maintenance Efficiency 6 / 10
Range & Endurance 9 / 10

PROS

Long-range standoff strike capability
Stealth airframe reduces detection
Fire-and-forget autonomous guidance
Compatible with multiple U.S. aircraft
Hardened-target penetrating warhead

CONS

Higher cost than conventional munitions
Subsonic speed limits time-to-impact
Requires certified launch platforms
Complex logistics and storage requirements
Limited availability for some allied users

AGM-158 JASSM Stealth Cruise Missile

The AGM-158 Joint Air-to-Surface Standoff Missile (JASSM) is one of the U.S. military’s premier long-range precision strike weapons, engineered to defeat high-value and well-defended targets while keeping aircraft out of hostile air defense zones. Developed by Lockheed Martin, the missile reflects decades of innovation in survivable cruise weapons, combining stealth shaping, autonomous guidance, and standoff capability for U.S. tactical aircraft and bomber fleets. Entering service in the early 2000s, JASSM has since become a core component of America’s deep-strike and deterrence toolkit.

Design & Capabilities

Built for penetration against advanced air defense networks, the AGM-158 features a low-observable airframe and an imaging infrared seeker paired with GPS/INS navigation, delivering high target accuracy even in GPS-challenged environments. Its 1,000-pound class penetrating warhead is optimized for hardened structures, command centers, airfields, and strategic infrastructure. Operating at subsonic speeds, the missile maintains long-range reach, with the baseline JASSM offering ranges exceeding 200 miles, and extended-range variants pushing much farther.

Operational Flexibility

The missile is compatible with U.S. bombers such as the B-1B, B-2, and B-52, as well as tactical aircraft like the F-15E, F-16, F/A-18, and F-35. Designed as a fire-and-forget system, JASSM allows launch aircraft to disengage immediately, enhancing survivability in contested airspace. It has been fielded in multiple theaters and remains active across U.S. forces, with allied adoption expanding through Foreign Military Sales.

Stealth and Mission Role

By offering precision lethality without requiring aircraft to cross defended borders, JASSM plays a pivotal role in power projection, suppression of enemy defenses, and strategic strike missions.

AGM-158 JASSM Price

Pricing for the AGM-158 JASSM varies based on configuration, production batch, and integration requirements, but U.S. procurement data places unit costs generally in the several hundred-thousand-dollar range per missile, with extended-range variants costing significantly higher due to enhanced propulsion and range capabilities.

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