Key Points and Summary - The U.S. Army has canceled the planned M1 Abrams SEPv4 (System Enhancement Package Version 4) upgrade, citing concerns that the tank has reached its weight and power limits ...
National Security Journal on MSN
Super armor failure: Why the US Army said no to the M1 SEPv4 Abrams tank
The cancellation of the SEPv4 and the M10 Booker marks the end of the "Armor-at-any-cost" era. In the 2026 combat landscape, ...
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