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We have arranged the following to assist you in understanding how to do business with us.

Purchase Order Requirements

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Defense Sustainment //

Proprietary Distribution //

Mission Readiness //

Global FMS/DCS Support //

AS9100D Certified //

News

July 20, 2026
HC Pacific Rebrands as Proponent Defense at Farnborough International Airshow 2026

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March 27, 2026
Come Visit us at MRO Americas 2026!

Read More
March 3, 2026
Proponent Helicopter Services Now Authorized Global Distributor for Donaldson Filtration Products

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Ready to Partner with Proponent Defense?

Whether you’re seeking a trusted distribution partner or mission-critical supply chain support, our team is ready to help.

HC Pacific Rebrands as Proponent Defense at Farnborough International Airshow 2026

July 20, 2026July 20, 2026
Come Visit us at MRO Americas 2026!

March 27, 2026
Proponent Helicopter Services Now Authorized Global Distributor for Donaldson Filtration Products

March 3, 2026March 3, 2026
Join us at Verticon 2026 and for Happy Hour!

February 24, 2026March 3, 2026

Proponent Defense
5536 Ontario Mills Pkwy.
Ontario, CA 91764

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