Variable Payload Munition (VPM) РDARPA Unsolicited Proposal 2017. 

The Variable Payload Munition or VPM under ARDEC review as file 2017-04. A proprietary mixture of inexpensive but unconventional metals give you a lighter round with tunable kinetic energy transfer, spalling, range, velocity all in a single sized gel insert. Lower cost, lighter and more lethal at longer ranges.

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