Massive Ordnance Penetrator (MOP)

Latest in Massive Ordnance Penetrator (MOP)

The U.S. Air Force quietly fixed a problem with the integration of the 30,000-pound class GBU-57/B Massive Ordnance Penetrator (MOP) bomb onto the B-2 Spirit stealth bomber last year. As part of the integration work, the service also conducted an important test of a new "smart fuze" for the MOP to help improve the weapon's effectiveness, even when the exact depth and positioning of the buried target are not definitively known.
Air

Massive Ordnance Penetrator Bunker Buster Grows More Potent

By Joseph Trevithick

Updated on Feb 6, 2025

B-2 MOP Yemen iran
Air

B-2 Spirits Just Sent A Very Ominous Message To Iran

By Tyler Rogoway

Updated on Oct 17, 2024

Natanz nuclear facility satellite view
News & Features

Iranian Underground Nuclear Facility May Be A Hard Target For America’s Biggest Bunker Busters

By Oliver Parken

Posted on May 24, 2023

MOP Bunker Buster
Air

Our Best Look Yet At The Massive Ordnance Penetrator Bunker Buster Bomb

By Oliver Parken

Posted on May 4, 2023

The Air Force’s New 5,000-Pound Bunker Buster Bomb Breaks Cover
Air

The Air Force’s New 5,000-Pound Bunker Buster Bomb Breaks Cover

By Joseph Trevithick

Updated on Oct 12, 2021

It’s Official: KC-46 Tankers And More F-35s For Israel, But No Advanced F-15s For Now
News & Features

It’s Official: KC-46 Tankers And More F-35s For Israel, But No Advanced F-15s For Now

By Thomas Newdick

Updated on May 11, 2021

Pentagon Deploys Six B-52s To Diego Garcia Beyond The Reach Of Iran’s Ballistic Missiles
News & Features

Pentagon Deploys Six B-52s To Diego Garcia Beyond The Reach Of Iran’s Ballistic Missiles

By Tyler Rogoway

Updated on Jan 7, 2020

Air Force Updates Massive Ordnance Penetrator Bombs Amid New Iranian Nuclear Posturing
Air

Air Force Updates Massive Ordnance Penetrator Bombs Amid New Iranian Nuclear Posturing

By Joseph Trevithick

Updated on Nov 14, 2019

USAF Orders More Upgraded Massive Ordnance Penetrator Bombs Amid Tensions with North Korea
Air

USAF Orders More Upgraded Massive Ordnance Penetrator Bombs Amid Tensions with North Korea

By Joseph Trevithick

Updated on Jun 30, 2019

New Video Of B-2 Bomber Dropping Mother Of All Bunker Busters Sends Ominous Message
Air

New Video Of B-2 Bomber Dropping Mother Of All Bunker Busters Sends Ominous Message

By Tyler Rogoway

Updated on May 17, 2019

The Air Force Wants Its B-52s To Carry Mysterious 20,000lb Weapons Under Their Wings
Air

The Air Force Wants Its B-52s To Carry Mysterious 20,000lb Weapons Under Their Wings

By Joseph Trevithick

Posted on Jun 22, 2018

This Giant B-2 Replica Is How Airmen Train To Load Weapons Onto A Stealth Bomber
Air

This Giant B-2 Replica Is How Airmen Train To Load Weapons Onto A Stealth Bomber

By Tyler Rogoway

Updated on Feb 19, 2018