A U.S. Army plant in Oklahoma is being upgraded to ... The Massive Ordnance Penetrator (MOP), known as the GBU-57A/B, is a ...
In addition to its massive weight (over 12 tons), the GBU-57A/B MOP is quite large with a length of 20.5 feet (for comparison, an F-16 Fighting Falcon fighter jet is 49 feet long) and a diameter ...