Sigma Advanced Systems Limited has secured an order worth US$19.7 million, approximately ₹174 crore, from a North American customer serving the NATO defence ecosystem for the manufacture and supply of specialised ancillary subsystems for 155 mm artillery ammunition.
The order is scheduled for execution by the second quarter of 2027, with manufacturing to be undertaken within the Sigma ecosystem. It marks the company’s fifth engagement in the 155 mm ammunition segment since May 2026. The latest contract expands Sigma’s portfolio beyond shell bodies and fuzes to include additional ammunition subsystems. The company’s existing activities in the segment include filled fuzes, conventional and advanced base-bleed shell technology, and collaboration on course-correction fuze technology.
The expansion reflects Sigma’s efforts to increase its participation across multiple stages of ammunition manufacturing. By adding complementary products to its portfolio, the company aims to address a wider range of customer requirements involving precision manufacturing, engineering and specialised production.
Sunil Kalidindi, CEO of Sigma Advanced Systems Limited, said international defence customers were increasingly looking for manufacturing partners capable of supporting more complex requirements across the ammunition supply chain. He said the order builds on the company’s existing capabilities in the 155 mm segment and provides an opportunity to expand its role in international defence manufacturing. Sigma will focus on manufacturing consistency, engineering capabilities and meeting customer requirements as the programme progresses.
Demand for artillery ammunition has received greater attention following the Russia–Ukraine war, which highlighted the need for sustained production capacity during high-intensity conflicts. NATO members and allied governments have taken steps to replenish inventories, increase procurement and strengthen manufacturing capacity.
The European Union introduced the Act in Support of Ammunition Production in 2024, with €500 million in funding intended to address production bottlenecks and expand Europe’s ammunition manufacturing base. NATO has also pursued initiatives to support demand coordination, multi-year procurement and industrial capacity.
For manufacturers, these developments have increased the importance of dependable suppliers across the ammunition production chain. Specialised subsystems require coordination between component interfaces, manufacturing processes, performance requirements and quality standards.
Sigma said its growing product range could help it pursue additional requirements within existing and future programmes. Any further orders or long-term supply agreements will depend on customer demand, programme performance, qualification requirements and mutually agreed commercial terms.
Sigma Advanced Systems Limited is an aerospace and defence engineering and manufacturing company. Its capabilities include precision engineering, aerospace components, defence systems and specialised manufacturing programmes for domestic and international customers. The company is expanding its manufacturing operations, engineering capabilities and customer relationships across aerospace and defence markets.
