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  7. Island Defense
Island Defense logo

Island Defense

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Calverton, NY 11933
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At a glance

Employee size
501-1,000
Organization type
Privately Held
Headquarters
Calverton, NY
Founded
2023

About

Island Defense makes and restores metal and composite components for the U.S. defense industry from a former Grumman naval facility in Calverton, New York. Its engineers and production teams work in the buildings where Grumman once assembled aircraft and tested the Apollo Lunar Module, carrying that Long Island defense-manufacturing legacy into domestic fabrication today. The campus spans more than 450,000 square feet of indoor milling, assembly, and production space.

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Related manufacturers

  • GSE Dynamics, Inc logoGSE Dynamics, IncFor more than 50 years, GSE Dynamics has been a Hauppauge defense manufacturer shaped by founder Dan Shybunko’s passion for supporting U.S. warfighters. The company is known for taking on complex military structures, with 87,000 square feet across two facilities and a dedicated composites division.HAUPPAUGE, NY
  • The Metadure Group logoThe Metadure GroupFor more than 70 years, The Metadure Group has manufactured military ground support equipment and aircraft components from its privately owned operation in Farmingdale, New York. The father-and-son business, descended from Stewart Avionics and Stewart Precision, also takes on custom metalworking projects for Long Island companies. Metadure is certified to ISO 9001:2015 and AS9100D and supplies equipment and parts supporting U.S. and NATO military aircraft.FARMINGDALE, NY
  • MaTech logoMaTechFounded in Salisbury in 1988 with four employees and one CNC machine, MaTech makes machined and fabricated components and provides assembly services for defense and other industrial customers. Its 165,000-square-foot facility supports work ranging from complex assemblies to military weapons, munitions, and electronic-warfare subsystems. MaTech also develops its own BUIS backup iron sights and operates an ISO 9001:2015-certified, ATF-compliant facility.SALISBURY, MD
  • ND Defense logoND DefenseND Defense builds mission-critical defense systems, from combat vehicles and maritime subcomponents to rugged electronics and resilient energy systems. Its domestic manufacturing operation in West Point, Mississippi, includes more than 650,000 square feet of high-bay production space and supports work from prototyping through full-scale production. The company also provides OEM-quality lifecycle support, including fleet services and resetting battle-damaged MaxxPro vehicles to operational condition.SPRINGFIELD, OH
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Website

islandefense.com

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Locations

Island Defense location map for 1101 SCOTT AVE

1101 Scott Ave

Calverton, NY 11933

Suffolk County

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Directory source

Source
islandefense.com
Updated
Sep 2026