Products & IP-led Solutions: Development of advanced defense technologies including drone and anti-drone systems, unmanned aerial platforms, and AI-enabled mission systems. These offerings are backed by in-house intellectual property and target high-margin, export-led opportunities.

Defense Sub-systems: Design, development, and manufacturing of mission-critical systems for missiles, avionics, radar, electronic warfare, and naval platforms. Sigma is among the few Indian players with end-to-end build-to-spec capabilities supported by strong engineering and software expertise.

Aerospace Components & Sub-assemblies: Through its UK subsidiary, Nasmyth, the company manufactures precision components and complex assemblies for aero-engine and airframe applications, with integrated capabilities across machining, fabrication, welding, and metal treatment.