CNC Machining for
Weapons System
Components in San Mateo, CA
We machine weapons system components for San Mateo defense teams. Receiver components, barrel extensions, trigger group parts, and rail systems from aluminum, steel, and titanium.
in the San Mateo area
in the San Mateo area
for San Mateo defense
growth (2022–2023)
CNC Machined Weapons System Components for Defense Teams
Defense teams in San Mateo need weapons components that are dimensionally exact and built to mil-spec. We machine aluminum, steel, and titanium receivers, trigger groups, and rail systems to tight tolerances. Full documentation on every order.
Defense-Grade Materials
7075 aluminum, 4340 steel, and titanium with mil-cert traceability.
Mil-Spec Tolerances
±0.001" on general features. Tighter on critical timing bores.
Defense Docs
Inspection reports and material certs for your defense program.
Weapons System Parts for San Mateo Teams
Receivers, trigger groups, barrel extensions, and rail systems machined to mil-spec.
Receiver Components
7075-T6 aluminum and 4140 steel receiver components with precise bore and pin dimensions.
7075-T6 & 4140Barrel Extensions
4140 and 4340 steel barrel extension components with precise headspace and thread form dimensions.
Headspace criticalTrigger Group Parts
4140 steel trigger, hammer, sear, and disconnector components. Precise geometry and surface hardness.
4140 steelRail Systems
7075 aluminum Picatinny and M-LOK rail sections with precise slot geometry and flatness.
Mil-spec slotsMagazine Wells
Aluminum magazine well inserts and feed lip guides with precise tolerances for reliable feeding.
Feed geometryBolt Carrier Components
Steel bolt body and carrier components with precise cam pin, gas key, and extractor features.
Heat treatedSan Mateo Defense Manufacturing
Central Peninsula position connects to South Bay defense primes via US-101.
Lockheed Martin — Largest Defense Prime
F-35 Lightning II, C-130J, and advanced missile systems programs drive massive demand for precision-machined structural and electronic components.
Raytheon Technologies — Missiles & Radar
Raytheon's Stinger, Tomahawk, and Patriot programs require thousands of precision-machined parts per unit from a wide supply chain.
Northrop Grumman — Advanced Systems
B-21 Raider, Global Hawk, and space systems programs. Northrop's supply chain spans hundreds of precision machining suppliers.
L3Harris, BAE Systems & Others
Defense electronics and comms primes rely on agile machining suppliers for housings, brackets, and assemblies across all program phases.
Lockheed Martin
F-35 Lightning II, C-130J, and advanced missile systems programs drive...
Raytheon Technologies
Raytheon's Stinger, Tomahawk, and Patriot programs require thousands of...
Northrop Grumman
B-21 Raider, Global Hawk, and space systems programs. Northrop's supply...
L3Harris, BAE Systems & Others
Defense electronics and comms primes rely on agile machining suppliers for...
Built for Defense Teams
ITAR-registered, fully traceable, and built to mil-spec documentation standards.
ITAR-Registered
We are registered with the DDTC under ITAR. Defense and controlled-technology projects are handled by US persons only with proper export control procedures.
Mil-Spec Documentation
Every defense order ships with a dimensional inspection report, material cert, and process records. We structure our paperwork to meet program office requirements.
CMM Inspection Included
Every critical feature is verified before shipping. CMM reports go with every defense order — so your receiving team and program office have the data they need.
Fast Prototype Turnaround
Most prototype orders ship in 5 to 7 business days. Rush available — tell us your program schedule.
in San Mateo We Can Serve
Need our full quality documentation before ordering? Email us — we'll send everything your team needs to evaluate.
From File to Part in 3 Steps
Simple, clear, and designed for fast-moving defense teams.
Upload & Quote
Send your STEP or IGES file. Pick your material, quantity, and finish. Our AI gives you a real price right away. We also run a free DFM check and flag anything that could add cost.
We Machine & Inspect
Your parts run on our CNC mills and lathes. Every order gets CMM inspection. We check every critical feature against your drawing before anything ships.
Ship with Full Docs
Parts ship with your dimensional inspection report, material certs, and all program documentation. ITAR-controlled shipments are handled per export compliance procedures.
All Defense Parts We Machine
See every part type we machine for defense teams in San Mateo.
Questions from San Mateo Defense Teams
Defense CNC Machining in Other Cities
We serve defense teams in cities across the US.
Tips for Defense Teams in San Mateo
What engineers buying CNC parts in San Mateo should know.
Central Peninsula connects to South Bay defense primes.
Lockheed Martin and Moffett Federal Airfield are 25 minutes on US-101. Verify ITAR registration before quoting classified components.
Foster City defense electronics cross the 92 corridor.
Defense companies in Foster City spec mil-spec finishes and EMI shielding. Put MIL-A-8625 anodize requirements on the drawing.
Specify DFARS-compliant materials on defense orders.
San Mateo shops serve multiple industries. Put defense material sourcing requirements explicitly on your PO to avoid substitutions.
Upload Your Defense CAD File
Weapon mounts, optical housings, tactical enclosures — we machine them all. ITAR-registered. Get instant AI pricing or email us for program discussions.
ITAR-registered · NDA ready · No minimums · Ships anywhere in the US
Currently accepting new projects
AI price estimates are usually within ±20% of final price. Complex parts may get a human review within one business day before pricing is confirmed.