GBU-57A/B MOP
< GBU-57A
| GBU-57A/B Massive Ordnance Penetrator | |
|---|---|
GBU-57 MOP prototype | |
| Type | Bunker buster |
| Place of origin | United States |
| Service history | |
| In service | 2011–present |
| Used by | United States Air Force |
| Production history | |
| Manufacturer | Boeing |
| No. built | 20 |
| Specifications | |
| Mass | c. 30,000 lb (13,600 kg) |
| Length | 20.5 ft (6.2 m) |
| Diameter | 31.5 in (0.8 m) |
| Filling | AFX-757/PBXN-114 |
| Filling weight | 4,590 / 752 lb (2,082 / 341 kg) |
The GBU-57A/B MOP (Massive Ordnance Penetrator) is a 30,000-pound (13,600 kg) precision-guided "bunker buster" bomb developed for the United States Air Force (USAF). The designation GBU, short for Guided Bomb Unit, reflects its use of precision guidance systems. Significantly larger than earlier deep-penetration weapons such as the 5,000-pound (2,300 kg) GBU-28 and GBU-37, the GBU-57 is designed to destroy heavily fortified, deep underground bunkers. Measuring 20.5 feet (6.2 m) in length, its size and weight limit its deployment to strategic bombers, with the B-2 Spirit being the only currently operational aircraft capable of carrying it. There have been at least 20 built as of November 2015.