Rheinmetall Output Eclipses US Artillery Production: Germany Reaches 1.1 Million Rounds Annually

Technical Summary

Newsweek reported on 28 April 2026 that Germany has overtaken the United States in artillery ammunition production capacity, with Rheinmetall AG scaling annual output to 1.1 million rounds — an order-of-magnitude lift on the pre-Ukraine corporate baseline of approximately 70,000 rounds per year. Rheinmetall Chief Executive Armin Papperger provided the figure to reporters; the article also quotes German Chancellor Friedrich Merz on Europe’s reduced reliance on the United States, German Defence Minister Boris Pistorius on Germany’s 2039 ambition to field “the strongest conventional army in Europe,” and NATO Secretary General Mark Rutte on alliance-wide ammunition and air-defence demand. Stockholm International Peace Research Institute (SIPRI) data on global military spending and the NATO 5%-of-GDP defence-spending pledge frame the article.

The 1.1 million figure is corporate-wide and aggregates Rheinmetall’s ramped output across Unterlüss in Lower Saxony (the August 2025 plant opening, characterised as Europe’s largest ammunition factory), the Spanish Expal Systems acquisition, Hungarian production at Várpalota, the new Bulgarian Victoria-Plovdiv 155 mm forging line announced in late 2025, and the Romanian joint venture at Victoria. Unterlüss alone is targeted at 350,000 rounds per year by 2027 against the original 200,000-round design intent, an upward revision Rheinmetall confirmed in April 2025. The principal calibres are 155 mm L52 (M107-pattern, DM121 and DM131 high-explosive fragmentation) and 120 mm tank ammunition (DM63A1, DM73 and DM83), supported by modular charge systems including DM72 and DM82 propellants.

Rheinmetall now produces 1.1 million artillery rounds per year — more than 15 times the corporate output of 70,000 rounds at the start of the Ukraine war — with Unterlüss alone targeted at 350,000 rounds annually by 2027. Armin Papperger, Rheinmetall CEO, briefing to reporters, 28 April 2026

Analysis of Effects

Operationally, the milestone matters because 155 mm consumption rates in Ukraine peaked at approximately 6,000–8,000 rounds per day in 2024 and have stabilised at 4,000–5,000 rounds per day under European supply effort during 2025–26. A single corporate output of 1.1 million rounds per year — approximately 3,000 rounds per day — covers between 60% and 75% of the current Ukrainian Armed Forces (UAF) consumption profile from one supplier alone, with EU-wide capacity (NSPA, Nammo, BAE Systems, MBDA-Eurenco aggregate) layered on top. The European Defence Agency 2 March 2024 baseline target of 1 million 155 mm rounds per year for Ukraine has therefore been met by Rheinmetall as a single corporate entity, eighteen months later than the original commitment but at materially higher steady-state capacity.

The energetics chain remains the binding constraint. Each DM121 155 mm HE-FRAG round carries approximately 7.5 kg of TNT-equivalent explosive fill (Composition B variants, Hexal, or Insensitive Munitions Explosive (IMX)-class composition where the round is upgraded for STANAG 4439 compliance). Aggregate output of 1.1 million rounds therefore consumes approximately 8,250 tonnes of TNT-equivalent fill per year, plus several thousand tonnes of single-base, double-base and triple-base modular propellants for the charge stack. European TNT supply is concentrated at Nitro-Chem in Bydgoszcz, Poland; nitrocellulose (NC) and nitroglycerine (NG) supply is concentrated at Eurenco Bofors (Karlskoga, Sweden) and Eurenco Sorgues (France); and the Bulgarian and Serbian energetics base provides the third source for both. Any one of those nodes is a single point of failure (SPoF) that materially constrains the headline shell figure.

Personnel and Safety Considerations

Sustained output at 1.1 million rounds per year concentrates Net Explosive Quantity (NEQ) at a small number of European industrial sites. Hazard classification at the loaded-and-fuzed projectile stage applies HD 1.1 D under IATG 01.50 Annex C and STANAG 4123. AASTP-1 inhabited-building distance (IBD), public traffic route distance (PTRD) and process-building distance (PBD) tables drive the siting envelope; Unterlüss is located on the Lüneburg Heath specifically because the historical Rheinmetall test ranges provide the AASTP-1-compliant footprint. Workforce competence pipelines — chemical engineers, propellant chemists, NDT specialists and certified ammunition technicians under STANAG 2310 and the German Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr (BAAINBw) competence framework — are the second binding constraint. The European Defence Industrial Strategy (EDIS) of March 2024 identifies workforce as a Tier-1 risk and is the framework under which BMVg and Rheinmetall are expanding training pipelines.

Data Gaps

DATA GAP: The Newsweek article does not specify the calibre split within the 1.1 million figure (155 mm vs 120 mm vs medium-calibre 30/35 mm). DATA GAP: Comparable US Army FY26 155 mm production rate not given; the US Army Modernisation Master Plan target is 100,000 rounds per month (1.2 million per year) but actual delivery rate at Mesquite, Scranton and Iowa Army Ammunition Plant remains in the 50,000–60,000 monthly band. DATA GAP: Export licence allocation across Ukraine, Bundeswehr stockpile, NATO partner deliveries and FMS/EU PURL is not disclosed. DATA GAP: Energetics dependency on Nitro-Chem Bydgoszcz, Eurenco Bofors and Eurenco Sorgues at corporate-wide volume not separately reported.

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