India’s defence manufacturing sector has entered a decisive phase. Indigenous defence production reached approximately ₹1.27 lakh crore in FY 2023–24, the highest ever recorded, with exports crossing ₹21,000 crore, reflecting sustained growth in domestic capability and global competitiveness. The Government has also set a target of ₹3 lakh crore in defence production by 2028–29, with exports expected to scale significantly.
These figures demonstrate policy momentum. However, the true test of defence indigenisation lies not in aggregate production numbers, but in the depth and resilience of the supply chain that supports them.
At the centre of this discussion is a critical layer: Tier-2 and Tier-3 precision suppliers.
The Structural Reality of Defence Manufacturing
Defence manufacturing is fundamentally different from consumer or industrial mass production.
It is characterised by:
- Low production volumes
- High part complexity
- Tight geometric tolerances
- Stringent material traceability
- Extensive documentation and quality certification
- Long lifecycle maintenance requirements
A defence system, whether an aircraft assembly, artillery subsystem, naval component, or armoured platform, depends on hundreds to thousands of precision components. Many of these are not produced by prime contractors but by MSMEs and specialised machining units operating within Tier-2 and Tier-3 layers.
India currently has more than 16,000 MSMEs contributing to the defence supply chain, supplying machined parts, fabricated components, assemblies, and specialised sub-systems. These enterprises are the operational backbone of indigenisation.
Yet, they also represent its most significant bottleneck.
Why the Bottleneck Exists
Large OEMs often receive attention due to platform contracts and offset agreements. However, the execution risk resides further down the value chain. Three structural challenges affect precision MSMEs:
1. Capability Variability
Defence-grade manufacturing requires:
- Micron-level dimensional accuracy
- Surface integrity control
- Controlled machining parameters
- Advanced inspection systems
- Compliance with standards such as AS9100, ISO 9001, and defence procurement protocols
Many MSMEs possess machining capacity, but not all possess the full process discipline required for repeatable, certified defence production.
2. Low-Volume Economics
Defence manufacturing rarely operates at automotive-scale volumes. Batch sizes are often small, sometimes in double or triple digits. Traditional production models struggle to maintain profitability under such conditions.
3. Speed of Iteration
Modern defence programmes increasingly require:
- Rapid prototyping
- Design modifications during validation
- Accelerated integration timelines
Slow iteration cycles translate directly into programme delays.
The Role of On-Demand Manufacturing in Defence Supply Chains
This is where on-demand manufacturing becomes strategically relevant. Unlike conventional high-volume contract manufacturing, on-demand models are designed for:
- Small-batch, high-precision production
- Frequent setup changes
- Rapid transition from prototype to production
- Compressed lead times
In defence ecosystems, this enables three critical capabilities:
Rapid Prototyping
Early-stage validation often requires iterative machining of fixtures, brackets, housings, and structural parts. On-demand systems allow rapid design-to-manufacture translation without committing to large-scale production prematurely.
Low-Volume Production
Certain defence components do not justify dedicated high-capacity production lines. Flexible manufacturing setups allow economically viable small-batch production while maintaining quality control.
MRO (Maintenance, Repair, and Overhaul) Support
Defence assets have long operational lifecycles. Replacement parts must be available even decades after original production. On-demand precision manufacturing allows localised, specification-compliant part reproduction, reducing dependence on imports and long supply chains.
The Strategic Implication
India’s defence production targets are ambitious. Achieving ₹3 lakh crore in output will require:
- A broader base of certified precision suppliers
- Stronger process discipline across MSMEs
- Advanced metrology adoption
- Skilled CNC programmers and tool designers
- Design-for-manufacture integration at early stages
Indigenisation cannot rely solely on final assembly localisation. It requires deep capability at the component level. The long-term strategic advantage lies in building thousands of precision suppliers who can meet defence tolerances reliably and consistently.
Precision as Strategic Infrastructure
Policy announcements create opportunity. Execution capacity converts opportunity into output. The strength of a defence manufacturing ecosystem is determined not only by its flagship programmes, but by the reliability of its smallest components. Tier-2 and Tier-3 suppliers are not peripheral actors. They are the engineering infrastructure that sustains platform integrity, programme timelines, and operational readiness.
Mechkonnect’s Perspective
At Mechkonnect, we view defence indigenisation through a capability lens. Precision machining, process control, structured quality systems, and engineering-led production are not optional enhancements; they are foundational requirements.
As India expands its defence manufacturing ambitions, strengthening the precision MSME layer will be decisive in ensuring supply-chain resilience, technological independence, and global competitiveness.
Indigenisation succeeds not when policy is announced, but when precision execution becomes predictable.
