Defense Companies in the NYC Metro Area
These are the 19 defense contractors in NYC and the wider metro area with a documented role in the arms supply chain, from Lockheed Martin and Boeing in Manhattan to the small parts makers of Long Island. The job boards list these companies' benefits; we list their contracts. Every defense company in New York named here links to a sourced profile, with each claim attributed to already-published reporting and records, not asserted.
Last audited .
There are 19 defense companies and military contractors in the NYC metro area documented in Break the Chain's audited, open arms-supply database, each with a sourced profile of the published evidence.
- Arkwin Industries, Inc., Long Island
- BAE Systems Information and Electronic Systems Integration Inc., Long Island
- Computech International, Inc., Long Island
- Elbit Systems, JFK Airport
- G&B Packing Company, Newark / Jersey City
- G&G Services, Newark / Jersey City
- GSE Dynamics, Inc., Long Island
- HEICO Corp., Long Island
- L3Harris Technologies, Inc., Upstate New York
- Lockheed Martin, Manhattan
- Mil-Spec Industries, Corp., Long Island
- Mod-A-Can Inc., Long Island
- Ontic Engineering & Manufacturing, Inc., Long Island
- Parker-Hannifin Corporation, Long Island
- Pioneer Industries, Inc., Long Island
- The Boeing Company, Manhattan
- TTM Technologies, Upstate New York
- Ultra Electronics Holding PLC, Long Island
- Yonir Technologies, Inc., Westchester
📍 JFK Airport
📍 Long Island
- Arkwin Industries, Inc. Manufacturers hydraulics and fuel systems components in F-35 supply chain
- BAE Systems Information and Electronic Systems Integration Inc. Operating group within of BAE Systems Inc., the US subsidiary of BAE Systems plc
- Computech International, Inc. Designs and manufactures computing solutions, noted by Who Profits Research Center for supplying the Israeli Ministry of Defense
- GSE Dynamics, Inc. Manufactures military equipment and listed as a partner for Israeli aerospace company, Turbine Support International Ltd.
- HEICO Corp. Subsidiary, Seal Dynamics manufactures parts for weapons and aircraft used by Israeli military
- Mil-Spec Industries, Corp. Manufacturer and supplier of defense, aerospace, and commercial industries excluded on two investment exclusion lists for cluster munitions and…
- Mod-A-Can Inc. Mod-A-Can makes parts for Lockheed Martin's C-130J planes, of which Israel has seven. These are transport planes which are used to transport su…
- Ontic Engineering & Manufacturing, Inc. Manufacturer of military equipment parts exported to Israel in 2023
- Parker-Hannifin Corporation Manufacturers components used in F-35 fighter jets and sole approved source for parts in FMS sales to Israel.
- Pioneer Industries, Inc. Distributes weapons and aerospace industry parts
- Ultra Electronics Holding PLC Part of supply chain for Lockheed Martin F-35s
📍 Manhattan
📍 Newark / Jersey City
📍 Upstate New York
- L3Harris Technologies, Inc. L3Harris manufactures components that are integrated into multiple weapons systems used by the Israeli military in Gaza, including Boeing's JDA…
- TTM Technologies "Real-time" high-resolution surveillance technology/high-technology electronic systems for military and commercial applications
📍 Westchester
❓ Frequently asked questions
What defense companies and contractors are based in the NYC metro area?
Break the Chain documents 19 defense companies and military contractors with a sourced role in the New York and New Jersey arms supply chain, ranging from major national contractors to small, specialized Long Island and New York component manufacturers. Every company is listed below with a profile tied to already-published records. Documented companies include Lockheed Martin, The Boeing Company and L3Harris Technologies, Inc..
Which major defense contractors have offices in New York City?
Lockheed Martin and The Boeing Company both keep corporate offices in Manhattan, and both appear in Break the Chain's audited database with sourced profiles. Around them sits a wider metro network: BAE Systems' US electronic-systems arm and more than a dozen specialized component manufacturers on Long Island, L3Harris facilities in Upstate New York, and freight handlers around JFK Airport. Each company's profile documents its role with links to already-published records, so you can check the evidence yourself.
Are there weapons manufacturers in New York City and the metro area?
Yes. The manufacturing is concentrated on Long Island, where documented firms machine hydraulics, fuel-system components, aircraft structures, and ammunition parts. Corporate offices cluster in Manhattan, and the finished cargo moves out through JFK Airport and the New Jersey ports. Break the Chain documents 19 defense companies in the New York metro area with a sourced role in this supply chain; every claim is attributed to published reporting and public records rather than asserted.
How were these defense companies identified?
Each entry comes from a manual audit of public records, investigative reporting, and corporate disclosures. A company appears only when an already-published source documents its role; the claim is attributed to that source, not asserted, and is not a legal conclusion about the company.
Where can I see the full data and sources?
The full dataset is published openly under CC0 at the tracker (https://wecanbreakthechain.com/tracker/), and every company has its own profile with the evidence and source links.
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🗂️ Browse other slices of the database
- Long Island defense contractors (14 companies)
- Military logistics companies in NYC and New Jersey (9 companies)