CNC Milling
Multi-axis CNC milling for complex firearms components—receivers, frames, and housings—with 3-, 4-, and 5-axis capability, tight tolerances, and repeatable accuracy across every production run.
When tolerances are measured in ten-thousandths of an inch and reliability is non-negotiable, Criterion Precision Machining delivers. Since 1953, we've produced mission-critical firearms components—triggers, bolt carriers, barrels, and more—using advanced CNC milling, turning, and Swiss turning technologies. ISO 9001 certified and ITAR registered, we machine to spec the first time, every time.
End-to-end precision machining solutions for firearms components—from prototype to full-volume production with certified quality at every step.
Multi-axis CNC milling for complex firearms components—receivers, frames, and housings—with 3-, 4-, and 5-axis capability, tight tolerances, and repeatable accuracy across every production run.
High-precision CNC turning for cylindrical firearms parts such as barrels and pins, holding tolerances down to ±.0002" in titanium, stainless steel, and specialty alloys.
Swiss turning for small, intricate firearms components—pins, springs, and micro-features—with diameters as small as .010" and exceptional surface finishes on difficult materials.
Production-intent firearms component prototyping machined on the same equipment as final parts, providing real-world performance data and a seamless path to high-volume production.
Certified quality inspection using CMM, OASIS optical systems, and Keyence measurement tools to verify every firearms component meets drawing and compliance requirements before shipment.
Proven experience machining firearms-grade materials including 4140 steel, stainless steel, titanium, aluminum, and specialty alloys to exacting dimensional and surface finish standards.
Firearms demand zero tolerance for error—a standard Criterion Precision Machining has upheld since 1953. Operating from Brook Park, Ohio, and serving defense and firearms OEMs across the United States, we apply our Swiss turning, CNC turning, and 5-axis CNC milling capabilities to produce triggers, bolt carriers, barrels, housings, and complex subassemblies. ISO 9001 certified and ITAR registered, every component is inspected against drawing with our Global Advantage CMM and OASIS optical systems, so you receive parts that function flawlessly in the field.
See how Criterion delivers precision, compliance, and on-time performance for firearms and defense manufacturers.
Seven decades of precision machining expertise, advanced equipment, and certified quality systems set Criterion apart for firearms component production.
Fully ITAR registered and compliant, ensuring secure, lawful machining of controlled firearms and defense components for U.S. manufacturers.
We hold tolerances down to ±.0002", delivering the dimensional precision firearms mechanisms demand without exception.
ISO 9001 certified quality management system with CMM, OASIS optical inspection, and Keyence measurement—zero-defect delivery you can count on.
Founded in 1953 and now in its third generation of ownership, Criterion brings deep Ohio manufacturing heritage to every firearms component order.
Experienced professionals committed to precision, quality, and on-time delivery.
President
As the third-generation owner and President of Criterion Precision Machining, Tanya DiSalvo leads a woman-owned, non-union precision machining company with roots going back to 1953. Under her leadership, Criterion has invested in advanced CNC technology, certified quality systems, and ITAR registration to serve mission-critical industries including firearms and defense. Tanya's commitment to continuous improvement and customer partnership has positioned Criterion as a trusted supplier for defense OEMs and firearms manufacturers across the United States who require tight-tolerance components with zero margin for error. Her people-focused leadership style drives the company's culture of accountability and precision excellence.
Estimator/Project Manager
Mike Pinchot serves as Criterion's Estimator and Project Manager, bridging the gap between customer requirements and shop floor execution. With deep knowledge of precision machining processes including CNC milling, CNC turning, and Swiss turning, Mike evaluates customer drawings, develops competitive quotes, and oversees project timelines to ensure firearms component orders are delivered on schedule and to specification. His hands-on approach and attention to detail make him a critical point of contact for firearms OEMs and defense contractors seeking reliable machining partnerships. Mike ensures every project is set up for success from the moment a request for quote is received through final delivery.
Quality Manager
Kelly Marflak oversees Criterion's certified Quality Assurance program as Quality Manager, ensuring every firearms component meets drawing specifications and compliance requirements before it leaves the Brook Park, Ohio facility. Kelly manages the company's ISO 9001 and ISO 13485 quality systems, coordinates CMM inspection protocols using PC-DMIS software, and oversees the OASIS optical inspection system and Keyence measurement tools. Her rigorous approach to quality documentation—including Certificates of Conformance and final inspection reports—gives defense and firearms customers the confidence that every shipment is traceable and verified. Kelly's leadership is central to Criterion's zero-defect delivery commitment.
Can you CNC gun parts?
Yes. Criterion Precision Machining produces precision firearms components using CNC milling (3-, 4-, and 5-axis), CNC turning, and Swiss turning. We machine triggers, bolt carriers, barrels, housings, pins, and complex subassemblies to tight tolerances down to ±.0002" in steel, stainless steel, titanium, aluminum, and specialty alloys.
Do you need a license to manufacture gun parts?
What is component machining?
What materials do you machine for firearms components?
What tolerances can you hold on firearms components?
Do you offer prototyping before full production runs?
What certifications does Criterion hold?
How do I get a quote for firearms component machining?
Talk to our engineering and estimating team for a free consultation on your firearms component project.
Criterion Precision Machining serves firearms OEMs and defense contractors across the entire United States from our Brook Park, Ohio facility.
Nationwide U.S.
Service Area
Brook Park, Ohio
Headquarters
Since 1953
In Business
We ship precision firearms components to defense and firearms manufacturers across the U.S. Contact us to confirm we can support your project.
Internationally recognized quality management system certification.
Registered with the U.S. State Department for controlled defense components.
Nationally certified Women's Business Enterprise by WBENC.
Share your drawings and specifications and our team will respond with a detailed quote. No-charge Certificates of Conformance and inspection reports are included with every order.
For immediate assistance, feel free to give us a direct call at 216-267-1733 You can also send us a quick email at office@criteriontool.com
For immediate assistance, feel free to give us a direct call at 216-267-1733 You can also send us a quick email at office@criteriontool.com