{"id":21456256,"date":"2026-09-10T10:21:29","date_gmt":"2026-09-10T08:21:29","guid":{"rendered":"https:\/\/migflug.com\/afterburner\/usaf-149m-large-penetrator-warhead-case-contracts-2026\/"},"modified":"2026-09-10T10:22:00","modified_gmt":"2026-09-10T08:22:00","slug":"usaf-149m-large-penetrator-warhead-case-contracts-2026","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/de\/usaf-149m-large-penetrator-warhead-case-contracts-2026\/","title":{"rendered":"USAF Awards $149M for Bunker Buster Warhead Cases"},"content":{"rendered":"\r\n<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">The most expensive part of the biggest conventional bomb in the American inventory is not the explosive. It is the pipe it lives in.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">On 10 September 2026 the US Air Force awarded a combined $149 million to four companies to keep making those pipes: hardened steel cases for large penetrating warheads. There is no prime contractor, no household name and no fanfare. The work went to forging and machining shops in Ohio and Pennsylvania, and it will run until 2033 if the options are taken up.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">It is one of the least glamorous contract notices the Pentagon has issued this month, and it tells you rather a lot about where American strategy has ended up.<\/p>\r\n\r\n\r\n\r\n<div style=\"background:#f5f5f5;padding:20px 24px;margin:26px 0\"><p style=\"margin:0 0 12px;font-weight:700;font-size:17px;color:#0d1117\">Quick Facts<\/p><table style=\"width:100%;border-collapse:collapse;font-size:15px;line-height:1.6\"><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Award date<\/strong><\/td><td style=\"padding:5px 0;color:#333\">10 September 2026<\/td><\/tr><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Value<\/strong><\/td><td style=\"padding:5px 0;color:#333\">$149 million combined<\/td><\/tr><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Scope<\/strong><\/td><td style=\"padding:5px 0;color:#333\">Large penetrator warhead case assembly production, full-scale and subscale<\/td><\/tr><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Winners<\/strong><\/td><td style=\"padding:5px 0;color:#333\">Superior Forge and Steel (Lima, Ohio); Ellwood National Forge (Irvine, Pennsylvania); Faxon Machining (Cincinnati, Ohio); Grand Valley Manufacturing (Titusville, Pennsylvania)<\/td><\/tr><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Contract type<\/strong><\/td><td style=\"padding:5px 0;color:#333\">Firm-fixed-price, cost-type indefinite-delivery, indefinite-quantity<\/td><\/tr><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Contracting office<\/strong><\/td><td style=\"padding:5px 0;color:#333\">Air Force Life Cycle Management Center, Attack Weapons Branch, Eglin Air Force Base, Florida<\/td><\/tr><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Offers received<\/strong><\/td><td style=\"padding:5px 0;color:#333\">Four<\/td><\/tr><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Completion<\/strong><\/td><td style=\"padding:5px 0;color:#333\">7 September 2033 if the option is exercised<\/td><\/tr><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Obligated so far<\/strong><\/td><td style=\"padding:5px 0;color:#333\">$10,000 in FY2026 research and development funding<\/td><\/tr><tr><td style=\"padding:5px 12px 5px 0;color:#555;vertical-align:top;white-space:nowrap\"><strong>Current weapon<\/strong><\/td><td style=\"padding:5px 0;color:#333\">GBU-57\/B Massive Ordnance Penetrator, roughly 13,600 kg (30,000 lb), carried only by the B-2 Spirit<\/td><\/tr><\/table><\/div>\r\n\r\n\r\n\r\n<h2 style=\"padding-top:22px\">What a penetrator case actually is<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">A bunker buster does its work in two stages, and the first one is purely structural. The weapon has to arrive at the target at high speed, punch through many metres of rock and reinforced concrete, and still be intact enough that the fuze can fire the charge inside at the right depth. If the case collapses on impact, everything else is irrelevant.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">That case is a single enormous forging of hardened steel with an extremely thick wall and a comparatively small cavity. Making one is a metallurgy problem, not an ordnance problem, which is exactly why the Air Force went to forging houses rather than to a bomb manufacturer. Superior Forge and Steel, Ellwood National Forge, Faxon Machining and Grand Valley Manufacturing are not defence primes. They are companies that know how to make very large pieces of steel behave.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/munitions-airmen-b-2-deployment-diego-garcia.jpg\" alt=\"Munitions airmen secure weapons during a B-2 combat deployment at Diego Garcia\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">Munitions airmen of the 393d Expeditionary Bomb Squadron during a B-2 deployment to Diego Garcia. The bombs are the visible part; the industrial base that forges their cases is not. Photo: U.S. Air Force \/ Tech. Sgt. Anthony Hetlage, DVIDS<\/figcaption><\/figure>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">The Air Force also asked for subscale versions, which are used for testing. You cannot iterate on a penetrator design by dropping full-size weapons at $3 million a go, so a serious penetrator programme consumes a steady stream of smaller test articles. That line item is the quiet confirmation that development work is continuing, not just production.<\/p>\r\n\r\n\r\n\r\n<h2 style=\"padding-top:22px\">The weapon everybody is thinking about<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">The Air Force's existing weapon in this class is the GBU-57\/B Massive Ordnance Penetrator, a roughly 30,000-pound bomb built by Boeing. Published figures for the explosive filling vary between about 2,400 and 2,700 kg, which tells you how much of that thirty thousand pounds is simply steel.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">When the Chairman of the Joint Chiefs of Staff described the weapon after the June 2025 strikes on Iran, he did so with almost aggressive plainness.<\/p>\r\n\r\n\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #1565c0;padding:20px 22px;margin:18px 0 24px;font-size:16px;line-height:1.7;display:flex;gap:20px;align-items:flex-start\"><div><em>&ldquo;The GBU-57\/B, which all of you I know know, is a 30,000-pound weapon dropped only by the B-2. It&rsquo;s comprised of steel, explosive, and a fuze.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Gen. Dan &ldquo;Razin&rdquo; Caine<\/strong> &mdash; Chairman of the Joint Chiefs of Staff, Pentagon press conference, June 2025<\/div><\/div><\/div>\r\n\r\n<p class=\"wp-block-paragraph\">Note the phrase &ldquo;dropped only by the B-2&rdquo;. Only the <a href=\"https:\/\/migflug.com\/aircraft\/b-2-spirit\/\">B-2 Spirit<\/a> can carry the MOP, two at a time, and the B-2 fleet is small enough that every airframe matters. That is the single most important constraint on the entire capability, and it is why the B-21 Raider's weapons bay dimensions have attracted so much attention.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/b-2-spirit-bomb-bay-door-whiteman-air-force-base.jpg\" alt=\"Airmen secure the bomb bay door of a B-2 Spirit weapons trainer at Whiteman Air Force Base\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">Airmen of the 509th Bomber Generation Squadron working a B-2 bomb bay door at Whiteman. Two Massive Ordnance Penetrators is the maximum load. Photo: U.S. Air Force \/ Staff Sgt. Joshua Hastings, DVIDS<\/figcaption><\/figure>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">During Operation Midnight Hammer in June 2025, B-2s dropped twelve MOPs on the Iranian enrichment facility at Fordow and two more on an underground section at Natanz. Caine described fuzes programmed individually for each weapon, each with its own impact angle and final heading, and the first bomb tasked simply with removing a concrete cap the Iranians had poured over the ventilation shafts.<\/p>\r\n\r\n\r\n\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/U4kJYfGs7BM\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\r\n\r\n<h2 style=\"padding-top:22px\">Which programme is this actually for?<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Here the notice is deliberately unhelpful. The Air Force did not say whether the cases are for the MOP, for its successor, or for both.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">That successor exists. In September 2025 the Air Force awarded Applied Research Associates a two-year design and prototyping contract for a Next Generation Penetrator, with Boeing partnered on the tail kit. The intent is a weapon that does the MOP's job without needing the MOP's carrier, which in practice means something smaller and more widely droppable.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">An eight-year, four-supplier, indefinite-quantity arrangement for warhead cases in full-scale and subscale sizes fits both readings. What it does not fit is a capability anybody expects to wind down. The Air Force has just told four steel shops to keep the furnaces warm until 2033.<\/p>\r\n\r\n\r\n\r\n<style>.mfq{margin:34px 0 8px}.mfq h2{font:26px\/1.3 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117;padding-top:22px;margin:0 0 6px}.mfq .qa details{border-top:1px solid #5C91FF;margin:0;padding:0}.mfq .qa details:last-of-type{border-bottom:1px solid #e2e7ee}.mfq .qa summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;font:18px\/1.7 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117}.mfq .qa summary::-webkit-details-marker{display:none}.mfq .qa summary::after{content:\"+\";font:24px Helvetica,sans-serif;color:#3568e0;flex:0 0 auto}.mfq .qa details[open] summary::after{content:\"\\2013\"}.mfq .qa details:hover summary{color:#3568e0}.mfq .qa .a{font:16px\/1.7 \"Gilroy regular\",Helvetica,Arial,sans-serif;color:#454e5e;padding:0 26px 24px}.mfq .qa .a a{color:#3568e0}@media(max-width:680px){.mfq .qa summary{padding:18px 14px;font-size:17px}.mfq .qa .a{padding:0 14px 20px}}<\/style>\r\n\r\n\r\n<section class=\"mfq\"><h2>Frequently Asked Questions<\/h2><div class=\"qa\"><details open><summary>What did the US Air Force buy for $149 million in September 2026?<\/summary><div class=\"a\">On 10 September 2026 the Air Force awarded four companies a combined $149 million for large penetrator warhead case assembly production: the hardened steel outer cases for large bunker-busting bombs, in both full-scale and subscale test versions. The winners were Superior Forge and Steel, Ellwood National Forge, Faxon Machining and Grand Valley Manufacturing. Work runs to 7 September 2033 if the option is exercised.<\/div><\/details><details><summary>What is the GBU-57 Massive Ordnance Penetrator?<\/summary><div class=\"a\">The GBU-57\/B Massive Ordnance Penetrator is the US Air Force&rsquo;s largest conventional bunker-busting bomb, weighing roughly 13,600 kg (30,000 lb) and built by Boeing. Most of that weight is the hardened steel case; published figures for the explosive filling range from about 2,400 to 2,700 kg. It is carried only by the B-2 Spirit, two per aircraft.<\/div><\/details><details><summary>Which aircraft can drop the Massive Ordnance Penetrator?<\/summary><div class=\"a\">Only the B-2 Spirit. Chairman of the Joint Chiefs of Staff Gen. Dan Caine stated plainly at a Pentagon press conference that the GBU-57\/B is &ldquo;a 30,000-pound weapon dropped only by the B-2&rdquo;. Claims that the B-52 carries the MOP operationally are incorrect.<\/div><\/details><details><summary>Why does the warhead case matter more than the explosive?<\/summary><div class=\"a\">A penetrating weapon must survive impact and passage through many metres of rock and reinforced concrete before its fuze initiates the charge at the intended depth. If the case deforms or breaks up on the way in, the weapon fails regardless of how much explosive it carries. That is why the case is a single very large hardened steel forging and why the Air Force contracts forging and machining specialists rather than a bomb manufacturer.<\/div><\/details><details><summary>Is there a replacement for the Massive Ordnance Penetrator?<\/summary><div class=\"a\">Yes, in development. In September 2025 the Air Force awarded Applied Research Associates a two-year design and prototyping contract for a Next Generation Penetrator, with Boeing partnered on the tail kit. The September 2026 case-assembly awards did not specify which penetrator programme they support.<\/div><\/details><details><summary>Where were Massive Ordnance Penetrators used against Iran?<\/summary><div class=\"a\">During Operation Midnight Hammer in June 2025, B-2 bombers dropped twelve GBU-57 MOPs on the Iranian enrichment facility at Fordow and two more on an underground portion of the facility at Natanz. Surface targets at Isfahan were struck separately by submarine-launched Tomahawk cruise missiles.<\/div><\/details><\/div><\/section>\r\n\r\n\r\n\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What did the US Air Force buy for $149 million in September 2026?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"On 10 September 2026 the Air Force awarded four companies a combined $149 million for large penetrator warhead case assembly production: the hardened steel outer cases for large bunker-busting bombs, in both full-scale and subscale test versions. The winners were Superior Forge and Steel, Ellwood National Forge, Faxon Machining and Grand Valley Manufacturing. Work runs to 7 September 2033 if the option is exercised.\"}},{\"@type\":\"Question\",\"name\":\"What is the GBU-57 Massive Ordnance Penetrator?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The GBU-57\/B Massive Ordnance Penetrator is the US Air Force\u2019s largest conventional bunker-busting bomb, weighing roughly 13,600 kg (30,000 lb) and built by Boeing. Most of that weight is the hardened steel case; published figures for the explosive filling range from about 2,400 to 2,700 kg. It is carried only by the B-2 Spirit, two per aircraft.\"}},{\"@type\":\"Question\",\"name\":\"Which aircraft can drop the Massive Ordnance Penetrator?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Only the B-2 Spirit. Chairman of the Joint Chiefs of Staff Gen. Dan Caine stated plainly at a Pentagon press conference that the GBU-57\/B is \\\"a 30,000-pound weapon dropped only by the B-2\\\". Claims that the B-52 carries the MOP operationally are incorrect.\"}},{\"@type\":\"Question\",\"name\":\"Why does the warhead case matter more than the explosive?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A penetrating weapon must survive impact and passage through many metres of rock and reinforced concrete before its fuze initiates the charge at the intended depth. If the case deforms or breaks up on the way in, the weapon fails regardless of how much explosive it carries. That is why the case is a single very large hardened steel forging and why the Air Force contracts forging and machining specialists rather than a bomb manufacturer.\"}},{\"@type\":\"Question\",\"name\":\"Is there a replacement for the Massive Ordnance Penetrator?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, in development. In September 2025 the Air Force awarded Applied Research Associates a two-year design and prototyping contract for a Next Generation Penetrator, with Boeing partnered on the tail kit. The September 2026 case-assembly awards did not specify which penetrator programme they support.\"}},{\"@type\":\"Question\",\"name\":\"Where were Massive Ordnance Penetrators used against Iran?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"During Operation Midnight Hammer in June 2025, B-2 bombers dropped twelve GBU-57 MOPs on the Iranian enrichment facility at Fordow and two more on an underground portion of the facility at Natanz. Surface targets at Isfahan were struck separately by submarine-launched Tomahawk cruise missiles.\"}}]}<\/script><p class=\"wp-block-paragraph\"><em>Sources: US Air Force contract announcements via Defence Blog; The War Zone; Pentagon press conference remarks by Gen. Dan Caine.<\/em><\/p>\r\n\r\n\r\n\r\n<div style=\"background:#f0f4ff;border-left:4px solid #5C91FF;padding:16px 20px;margin:32px 0 8px\"><p style=\"margin:0 0 8px;font-weight:600;color:#333\">Related Posts<\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/b-2s-drop-30000-lb-bunker-busters-on-irgc-underground-hq\/\">B-2s Drop 30,000-lb Bunker Busters on IRGC Underground HQ<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/afrl-affordable-hypersonic-cruise-missile-hamwc-2026\/\">AFRL Wants a Cheap Hypersonic Cruise Missile It Can Buy in Bulk<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/b-21-raider-two-pilot-crew-confirmed-2026\/\">No Robot at the Controls: The B-21 Keeps Two Pilots<\/a><\/p><\/div>\r\n","protected":false},"excerpt":{"rendered":"<p>Four forging shops in Ohio and Pennsylvania will keep making the steel cases for America\u2019s biggest bunker busters until 2033. No prime contractor, no fanfare.<\/p>","protected":false},"author":23,"featured_media":21456030,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[664,670],"tags":[],"class_list":["post-21456256","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-military-aviation","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>USAF Awards $149M for Bunker Buster Warhead Cases | MiGFlug<\/title>\n<meta name=\"description\" content=\"The US Air Force gave four forging shops $149M to keep making bunker buster warhead cases until 2033. 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