GBU-57A/B MOP
Sign in to saveAlso known as GBU-57A/B Massive Ordnance Penetrator, GBU-57/B, GBU-57B/B, GBU-57C/B, GBU-57D/B, MOP, bunker buster
United States Air Force bunker buster bomb of GBU-57 family
Key facts
- Type
- Bunker buster
- Place of origin
- United States
- In service
- 2011–present
- Used by
- United States Air Force
- Wars
- 2025 United States strikes on Iranian nuclear sites , 2026 Iran war
- Manufacturer
- Boeing
- Number span no built
- at least 20
- Mass
- 27,125 lb (12,304 kg)
- Length
- 20.5 ft (6.2 m)
- Diameter
- 31.5 in (0.80 m)
- Filling
- AFX-757/PBXN-114
- Filling weight
- 4,590 / 752 lb (2,082 / 341 kg)
via Wikipedia infobox
Wikidata facts
- Subclass of
- precision-guided munition
- Operator
- United States Air Force
- Country of origin
- United States
- Diameter
- 0.8
- Mass
- 30000
- Manufacturer
- Boeing
- Image
- Deleted GBU-57 MOP photo (2).jpg
- Length
- 6.2
- Significant event
- 2025 United States strikes on Iranian nuclear sites
Show 4 more facts
- Commons category
- Massive Ordnance Penetrator
- guidance system
- Global Positioning System
- used by
- United States Air Force
- service entry
- 2011-00-00
Sources (3)
via Wikidata · CC0
~8 min read
Encyclopedic overview
The GBU-57 series MOP—the initials stand for Guided Bomb Unit and Massive Ordnance Penetrator—is a 30,000-pound (14,000 kg) class, 20.5-foot-long (6.2 m) precision-guided munition "bunker buster" bomb developed by Boeing for the United States Air Force (USAF). Composed of a BLU-127 bomb body and an integrated GPS/INS guidance package, the GBU-57 has seven variants, the most recent being the GBU-57F/B. Due to its size and weight, the GBU-57 MOP can be carried only by the Northrop B-2 Spirit strategic bomber and the B-21 Raider, although initial tests were conducted with a modified Boeing B-52 Stratofortress.
The GBU-57 MOP was first used in combat on June 22, 2025, when seven Northrop B-2 Spirit stealth bombers dropped 14 GBU-57 bombs on Iran's Fordow Uranium Enrichment Plant and Natanz Nuclear Facility. GBU-57 bombs were also used in combat in the 2026 Iran war.
Excerpted from Wikipedia’s “GBU-57A/B MOP” article, available under the CC BY-SA 4.0 licence.