| 4K Machining Milling, Casting, Finishing · ITAR | Elizabeth, CO | MillingCastingFinishing | ITAR |
| Advanced Machining Milling, Turning, Swiss, EDM · ISO 9001, ITAR | Longmont, CO | MillingTurningSwissEDM | ISO 9001, ITAR |
| Cutter Innovations, LLC Milling, Turning, EDM · AS9100 | Wheat Ridge, CO | MillingTurningEDM | AS9100 |
| Davis Manufacturing Co Milling, Turning, Welding, Finishing · AS9100, ITAR, CMMC | Wheat Ridge, CO | MillingTurningWeldingFinishing | AS9100, ITAR, CMMC |
| Deltisan Engineering LLC Milling, Turning, Punching, Bending, Welding, Finishing, Assembly · ISO 9001 | Parker, CO | MillingTurningPunchingBendingWeldingFinishingAssembly | ISO 9001 |
| Final Frontier Manufacturing Milling, Turning, Finishing · AS9100 | Arvada, CO | MillingTurningFinishing | AS9100 |
| Focused on Machining Milling, Turning · ISO 9001, AS9100, ITAR, CMMC | Louviers, CO | MillingTurning | ISO 9001, AS9100, ITAR, CMMC |
| Franco Machine Milling, Turning, Welding · AS9100, ITAR | Loma, CO | MillingTurningWelding | AS9100, ITAR |
| Frontier Metal Stamping Inc Milling, Bending, Welding, Stamping, Finishing · ISO 9001 | Erie, CO | MillingBendingWeldingStampingFinishing | ISO 9001 |
| Golden Machining Solutions Inc Milling, Turning, Finishing · ISO 9001 | Arvada, CO | MillingTurningFinishing | ISO 9001 |
| Mace Manufacturing Milling, Welding · ISO 9001, AS9100 | Englewood, CO | MillingWelding | ISO 9001, AS9100 |
| Majestic Metals by Fathom Manufacturing Milling, Turning, Bending, Laser, Welding, Waterjet, EDM, Casting, Metal AM · ISO 9001, AS9100, ITAR, ISO 13485 | Denver, CO | MillingTurningBendingLaserWeldingWaterjetEDMCastingMetal AM | ISO 9001, AS9100, ITAR, ISO 13485 |
| McCallin Steel Storage Systems, Inc Milling, Punching, Welding, Finishing | Commerce City, CO | MillingPunchingWeldingFinishing | - |
| Mechfi Designs LLC Milling, Turning, Finishing | Westminster, CO | MillingTurningFinishing | - |
| Metalmasters Milling, Turning, Bending, Welding, Finishing | Brighton, CO | MillingTurningBendingWeldingFinishing | - |
| Metro Machine Inc Milling, Turning, Grinding · ISO 9001, AS9100, ITAR | Englewood, CO | MillingTurningGrinding | ISO 9001, AS9100, ITAR |
| Metron Machining LLC Milling, Metal AM · AS9100, ITAR, CMMC | Lakewood, CO | MillingMetal AM | AS9100, ITAR, CMMC |
| Mikron Manufacturing Inc Milling, Turning, Laser, Punching, Bending, Welding, Finishing, Assembly · ISO 9001, ITAR | Colorado Springs, CO | MillingTurningLaserPunchingBendingWeldingFinishingAssembly | ISO 9001, ITAR |
| Mountain CNC Milling, Turning, Waterjet, Welding, Grinding, Finishing, Assembly · ITAR, CMMC | Loveland, CO | MillingTurningWaterjetWeldingGrindingFinishingAssembly | ITAR, CMMC |
| PJ Machine LLC Milling, Turning, Laser, Bending, Welding, Grinding · ISO 9001, ITAR, CMMC | Clifton, CO | MillingTurningLaserBendingWeldingGrinding | ISO 9001, ITAR, CMMC |
| Precise Cast Prototypes & Engineering Inc Milling, Casting | Commerce City, CO | MillingCasting | - |
| Pro Machine & Engineering Milling, Turning, Welding, EDM, Metal AM · ISO 9001, AS9100, ITAR | Colorado Springs, CO | MillingTurningWeldingEDMMetal AM | ISO 9001, AS9100, ITAR |
| Prototype Casting Inc Milling, Turning, Welding, Casting | Commerce City, CO | MillingTurningWeldingCasting | - |
| S&W Precision Machining LLC Milling, Turning · ISO 9001, AS9100, ITAR, CMMC | Commerce City, CO | MillingTurning | ISO 9001, AS9100, ITAR, CMMC |
| Salco Inc Milling, Turning, Swiss, Welding, Assembly · ISO 9001 | Arvada, CO | MillingTurningSwissWeldingAssembly | ISO 9001 |
| Superior Metal Products Inc Milling, Turning, Grinding · ISO 9001 | Louviers, CO | MillingTurningGrinding | ISO 9001 |
| Topocut, LLC Milling, Laser, Bending, Finishing | Berthoud, CO | MillingLaserBendingFinishing | - |
| Xymat Milling, Turning, Bending, Laser, Welding, Waterjet, EDM, Metal AM · ISO 9001, AS9100 | Colorado Springs, CO | MillingTurningBendingLaserWeldingWaterjetEDMMetal AM | ISO 9001, AS9100 |