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GBU-57/B MOP Series
The GBU-57/B Massive Ordnance Penetrator (MOP) are a series of US-developed, 30,000 lb (13.6 tonne)-class, guided munitions, designed to attack hardened and deeply buried targets. What is thought to be the initial operating version of the GBU-57/B is the GBU-57A/B, which has various known differences (see Variants area). The first tactical offensive use of GBU-57/B MOP series munitions occurred in Iran between the 21st to 22nd of June 2025....
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