We specialize in CNC milling and CNC turning services to deliver custom CNC machining for national defense components that demand mission-ready reliability and precision. From firearm parts to aircraft assemblies, our contract manufacturing delivers the quality and consistency defense OEMs and Tier 1 suppliers require.
Precision CNC Machining for National Defense
Our team applies custom CNC machining strategies to achieve tight tolerances, optimize complex geometries, and scale production efficiently. Whether it’s prototyping new designs or supplying production volumes, our CNC milling and CNC turning expertise ensures components meet the highest standards of performance and compliance.
Receive Mission-Ready Precision
Our CNC turning service and CNC milling deliver consistency and precision. With tolerances down to ±0.0003″, we reduce rework, extend service life, and ensure reliability.
Achieve Complex Geometries
With 3-, 4-, and 5-axis milling, we machine intricate features in a single setup. This cuts cycle time, reduces cost, and ensures demanding designs meet defense requirements.
Optimize Your Supply Chain
We manage finishing and secondary processes through trusted partners and integrate into JIT and dock-to-stock programs. This ensures defense components are delivered complete, on time, and production-ready.
Defense Components We Machine
Our CNC machining and contract manufacturing expertise support a wide range of defense applications, including:
- Push-pull controls and knobs
- Firearm parts and assemblies
- Gears, shafts, and cylindrical parts
- Complex housing assemblies for military equipment
Material Expertise for Military-Grade Applications
We machine materials proven in defense applications, including:
- Engineered plastics
- Brass, bronze, and copper
- Aluminum and stainless steel
- Electrical steels
- Superalloys and aircraft alloys
- Carbon and tool steel
- Heat-treated materials up to Rockwell RC55
Advanced Defense Machining Capabilities
Our defense machining capabilities are optimized for precision, efficiency, and reliability:
- Multi-axis machining: 3-, 4-, and 5-axis milling with capacity up to 84″ × 32″ × 30″ for complex geometries and part consolidation.
- Tight tolerance turning: CNC turning service with bar feed to 2.5″ diameter, turning up to 24″ in diameter and 27.5″ in length.
- Custom fixturing: Proprietary setups that reduce lead times and improve machining stability.
- Supply chain support services: EDM, gear cutting, broaching, and heat treating managed through trusted defense-approved vendors.
- Material expertise: Skilled with plastics, aluminum, stainless, steels, superalloys, copper, brass, bronze, and hardened materials to RC55.
- Advanced Quality Control: ISO 9001:2015 certified with CMMs, optical comparators, microscopes, and calibration systems.
Why Medical OEMs Choose DPI

Decades of CNC machining expertise supporting defense programs

Proven success in machining complex geometries

Integration into supply chain support services, including JIT and dock-to-stock

Robust, ISO 9001:2015 certified quality systems structured to defense standards
FAQs
Yes. Our contract manufacturing services cover prototypes, pilot runs, and full-scale production, giving national defense OEMs flexibility across program stages.
Yes. In addition to in-house CNC milling and turning, we manage EDM, gear cutting, broaching, and heat treating through qualified partners as part of our OEM support services.
Yes. Our 5–axis milling and custom CNC machining deliver complex geometries in a single setup, reducing cost and lead time.
We are ISO 9001:2015 certified and follow rigorous in-process and final inspection protocols to ensure every defense part meets customer-specific requirements.
Partner with Our National Defense CNC Machining Experts
When consistency and reliability matter most, we deliver. With decades of expertise in CNC milling, CNC turning, and 5-axis milling, our contract manufacturing and supply chain support keep defense programs mission-ready.
Contact us to request a quote or learn how our CNC machining for aerospace parts and defense applications can support your next project.