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Polymer SixPAC - First Major Ammunition Packaging Revision Since WW2

Talyn

Emissary
Founding Member
Steel M2A2
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The U.S. Army Combat Capabilities Development Command Armaments Center has introduced SixPAC, a polymer and steel ammunition packaging system designed to replace the wood wirebound boxes that have been standard for small-caliber munitions since World War II. The system consists of two lightweight polymer inner containers housed within a steel outer pack, initially developed for 6.8mm cartridges and planned for rollout across legacy small-caliber production lines.


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The polymer inner packs are expected to weigh approximately half that of existing steel M2A2 containers. This weight reduction directly impacts soldier loadout capacity, particularly for weight-constrained platforms including watercraft and aircraft, where additional payload affects launch capability and platform agility.

The system eliminates the traditional wood outer box, which, according to the Army, required regular remediation, manual assembly, and was subject to mold growth. Another upside is that the removal of chemical wood preservative treatments reduces environmental exposure.

The injection molding process used for polymer inner pack production creates manufacturing redundancy. More than 800 injection molders operate within the United States and are capable of producing these containers.

The same production press can switch between different mold configurations for alternate products, eliminating the need for large dedicated fabrication lines or extensive tooling investment.
 
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