I photographed these M3 37mm anti-tank gun examples at Fort Lewis, Fort Lee, Quantico and Dubois.

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M3 anti-tank gun

Fort Lewis 2015

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M3 37mm anti-tank gun

NMMV Dubois WY 2025

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M3 37mm anti-tank gun

Ordnance Facility; Fort Lee 2026

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M3 37mm anti-tank gun

Marine Corps Museum; Quantico VA 2026