Mk 20 Rockeye II cluster bomb

Also known as

Mk 20 Rockeye
Rockeye II
CBU-99/B
CBU-99A/B
CBU-100/B
CBU-100A/B

The Mk 20 Rockeye II is an American air-dropped cluster bomb family built around the Mk 7 dispenser and 247 Mk 118 anti-armor bomblets. Fielded in 1968, it was designed for armoured targets and appears in AT-3 weapons listings as a carried store.

Mk 20 Rockeye II cluster bomb, Air-dropped cluster bomb, Munitions

Image source: File:Rockeye cluster bomb after drop with bomblets.jpg

Profile / Specs

Profile

Origin: United States
Built by: Honeywell Incorporated
Type: Air-dropped cluster bomb
Service note: 1968-present
Unit cost: under $91,000 (1984)

cluster munition air-dropped bomb

Specifications

Weight: 490 lb (222 kg)
Dispenser: Mk 7 bomb dispenser
Submunitions: 247 Mk 118 anti-armor bomblets
Fuze: Mk 339 mechanical time fuze
Delivery: Free-fall, unguided

Variants

Mk 20 Mod 3
Mk 20 Mod 4
Mk 20 Mod 6

Carrier Aircraft

TaiwanAirPower lists Mk 20 cluster bombs among the AT-3's carried weapons.

Carrier

Carrier type

Carriage evidence

AIDC AT-3/T-5 Brave Eagle, Advanced jet trainer and light attack aircraft family, Aircraft & UAVs

AIDC AT-3/T-5 Brave Eagle

Advanced jet trainer / light attack aircraft

TaiwanAirPower lists Mk 20 cluster bombs among the AT-3's carried weapons.

Sources: ROCAF AIDC AT-3 - TaiwanAirPower.org

Service And Conflict Use

Service History

In service: Fielded in 1968.

Media

Mk 20 Rockeye II cluster bomb Images

Mk 20 Rockeye II cluster bomb, Air-dropped cluster bomb, Munitions - view 1 — Source: File:Mk 20 cluster bombs on A-7 at NAS Pax 1984.JPEG

Mk 20 Rockeye II cluster bomb, Air-dropped cluster bomb, Munitions - view 2 — Source: File:AV-8A Harrier of VMA-231 drops Rockeye bomb in 1979.jpg

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Sources

MK-20 Rockeye - GlobalSecurity.orgPublisher: GlobalSecurity.org | Note: Supports the Mk 20 Rockeye II description, fielding date, dispenser, bomblet count, and anti-armor role. | Accessed: 2026-06-27 Israel's Use of Cluster Bombs in Lebanon - JSTORPublisher: JSTOR | Note: Supports manufacturer background; the article identifies the MK-20 Rockeye as manufactured by Honeywell Incorporated. | Accessed: 2026-06-27 Weapons File 1984 - BulletPickerPublisher: BulletPicker | Note: Supports the historical unit cost listing for MK-20 Rockeye. | Accessed: 2026-06-27 ROCAF AIDC AT-3 - TaiwanAirPower.orgPublisher: TaiwanAirPower | Note: Supports the AT-3 weapon list that includes Mk 20 cluster bombs among carried stores. | Accessed: 2026-06-27 File:Rockeye cluster bomb after drop with bomblets.jpgPublisher: Wikimedia Commons | Note: Supports image provenance and licensing for the primary Mk 20 gallery image. | Accessed: 2026-06-27 File:Mk 20 cluster bombs on A-7 at NAS Pax 1984.JPEGPublisher: Wikimedia Commons | Note: Supports image provenance and licensing for a Mk 20 gallery image. | Accessed: 2026-06-27 File:AV-8A Harrier of VMA-231 drops Rockeye bomb in 1979.jpgPublisher: Wikimedia Commons | Note: Supports image provenance and licensing for a Mk 20 gallery image. | Accessed: 2026-06-27