Pentagon MAC Names 14 Critical Munitions for FY27 Acceleration: Iran-War Replenishment Drives Industrial Priority List

Technical Summary

On 1 May 2026 Stars and Stripes and Breaking Defense reported that the Pentagon’s Munitions Acceleration Council (MAC) — the senior-leader panel established in 2025 to coordinate cross-Service munitions procurement, industrial-base mobilisation and quality assurance — had issued an internal priority list of 14 munitions for accelerated production through Fiscal Year 2027 (FY27, beginning 1 October 2026). The list comprises 12 legacy items judged operationally critical and two “emerging” capabilities. Senior officials cited by Breaking Defense confirmed the list was distributed in the final week of April 2026 and is being briefed to industry primes ahead of the FY27 budget submission.

The 12 legacy munitions named or cross-referenced across reporting include the Lockheed Martin / Boeing PAC-3 Missile Segment Enhancement (MSE) interceptor; the Raytheon Standard Missile-6 (SM-6, RIM-174); the AIM-120 Advanced Medium-Range Air-to-Air Missile (AMRAAM, with the AIM-120D-3 the current production baseline); the Tomahawk Land-Attack Missile (TLAM) Block V and Maritime Strike Tomahawk (MST) Block Va; the AGM-158B/C-3 Joint Air-to-Surface Standoff Missile Extended Range (JASSM-ER); the AGM-158C Long-Range Anti-Ship Missile (LRASM); the Lockheed Martin / Boeing Precision Strike Missile (PrSM) Increment 1; and supporting lots of GBU-31 Joint Direct Attack Munition (JDAM), GBU-39 Small Diameter Bomb (SDB-I), GBU-53 Stormbreaker (SDB-II) and AGM-114 Hellfire variants. The two emerging items are the Air Force Low-Cost Hypersonic Strike Weapon and the next-block PrSM Increment 2.

Twelve legacy and two emerging munitions — PAC-3 MSE, SM-6, AMRAAM, Tomahawk Block V, JASSM-ER, LRASM, PrSM Increment 1 and the Low-Cost Hypersonic Strike Weapon among them — have been named by the Pentagon’s Munitions Acceleration Council as the FY27 industrial-base priority list, with most items linked directly to Operation Epic Fury burn-rate replenishment. MAC priority list reported by Stars and Stripes and Breaking Defense, 1 May 2026

Analysis of Effects

The MAC list is a procurement-and-industrial-policy instrument, not a stockpile audit. It signals where multi-year procurement (MYP) authority, framework agreements and capacity-expansion equity investments will be concentrated through FY27. The strongest signal is the inclusion of three Raytheon framework items — Tomahawk, AMRAAM and SM-6 — that already received seven-year framework agreements on 4 February 2026 to lift annual production to 1,000+ Tomahawks, 1,900+ AMRAAMs and 500+ SM-6 rounds. The MAC list endorses those framework targets as the floor, not the ceiling, of the FY27 procurement profile.

The Lockheed Martin PAC-3 MSE entry is the most quantitatively defined: a $4.76 billion US Army production contract awarded 10 April 2026 lifts annual output from 600 to a target of approximately 2,000 missiles by end-2030, with Boeing receiving a parallel seven-year framework agreement (signed 8 April 2026) to triple PAC-3 seeker production. PrSM Increment 1, which made its operational debut against Iranian targets during Operation Epic Fury, received a separate Defense Department production agreement on 25 March 2026; the inclusion of PrSM Increment 2 in the “emerging” tier signals that the Increment 2 maritime-attack and longer-range variants will be funded as a fast-follower programme rather than a successor system.

Operational status of the named items varies. The PAC-3 MSE has been employed by US, Polish, Romanian, Japanese and Saudi Patriot batteries; Lockheed Martin reported deliveries of 620 PAC-3 MSE rounds in calendar 2025. The Tomahawk Block V entered low-rate initial production in FY22 and is fielded across the US Navy DDG-51 Flight IIA and Flight III, CG-47, and SSN-688/-774 inventories, with full operational capability declared in late 2024. The AGM-158C LRASM achieved IOC on the F-15EX in early 2026 and reached IOC on the P-8A Poseidon in 2025. The Low-Cost Hypersonic Strike Weapon — an Air Force Research Laboratory-sponsored programme intended to deliver an air-launched hypersonic round at a unit cost target below $5M — remains in late-stage development, with first operational flight tests publicly anticipated in calendar 2027.

Personnel and Safety Considerations

For ammunition technicians (AT), naval armament personnel (NAP), and the Joint Munitions Command (JMC) ammunition-flow planners, the MAC list translates directly into accelerated theatre throughput requirements. The Tomahawk all-up round (AUR), the SM-6 AUR and the AMRAAM family are HD 1.1 / Compatibility Group H or J under STANAG 4123 (allocated by the responsible NSO authority). The PAC-3 MSE round and canister set is HD 1.1, with Quantity-Distance (QD) calculations under NATO AASTP-1 inhabited-building distance (IBD) and public-traffic-route distance (PTRD) tables driving battery deployment planning. Insensitive Munitions (IM) compliance under STANAG 4439 and AOP-39 has now been formally embedded across all listed items, with PBXN-109, IMX-101 and IMX-104 fills now standard across the JDAM, SDB and air-launched-missile families.

For the energetics supply chain, the bottleneck remains solid rocket motor (SRM) propellant. The Pentagon’s $1 billion direct equity investment in L3Harris Missile Solutions (closed 23 April 2026) explicitly targets SRM capacity expansion at Camden, Arkansas; Huntsville, Alabama; and Orange, Virginia — the three principal sites supplying the PAC-3 MSE, SM-6, Tomahawk and PrSM motor lines. Holston Army Ammunition Plant (HSAAP) and McAlester Army Ammunition Plant (MCAAP) cover the warhead-fill and bomb-body assembly side.

Data Gaps

DATA GAP: Per-item production targets — the MAC priority list as reported does not publish individual round counts or annual production targets for each of the 14 munitions; only the Tomahawk / AMRAAM / SM-6 framework numbers are public.

DATA GAP: Funding line attribution — the FY27 budget submission has not been released; the split between baseline appropriation and the forthcoming Iran-war supplemental request is not yet disclosed.

DATA GAP: FMS partner allocation — the MAC list is silent on how accelerated production will be apportioned between US replenishment and FMS partner deliveries (notably Polish, Romanian, German, Japanese and Saudi PAC-3 MSE backlogs).

DATA GAP: Hypersonic baseline — the Low-Cost Hypersonic Strike Weapon programme structure, prime contractor selection and target unit cost remain undisclosed in MAC reporting.

AI-assisted technical assessment based on open-source material. Not a formal intelligence product. Image attribution noted where applicable.