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In this episode of GNSI’s At the Boundarypodcast, Research Fellow Dr. Guido Rossi and war studies specialist Dr. Matthew Ford to unpack one of the U.S. Army’s most consequential decisions: replacing the standard-issue M4 with the new M7 rifle. At the heart of the debate is the shift from 5.56mm to 6.8mm ammunition—and the controversy over reduced magazine capacity.

Together, they explore the trade-offs between combat effectiveness, soldier burden, and cost, while assessing how this change could reshape NATO standardization and global small arms policy. What does this decision mean for U.S. influence, allied forces, and the future battlefield? And is the Army truly ready for the operational and logistical challenges that come with the switch?

From military history to weapons innovation, this episode offers insights into the intersection of technology, policy, and strategy in modern warfare. Perfect for listeners interested in defense policy, small arms development, and the future of U.S. military power.

At the Boundary from the Global and National Security Institute at the University of South Florida, features global and national security issues we’ve found to be insightful, intriguing, fascinating, maybe controversial, but overall just worth talking about.
A "boundary" is a place, either literal or figurative, where two forces exist in close proximity to each other. Sometimes that boundary is in a state of harmony. More often than not, that boundary has a bit of chaos baked in. The Global and National Security Institute will live on the boundary of security policy and technology and that's where this podcast will focus.
The mission of GNSI is to provide actionable solutions to 21st-century security challenges for decision-makers at the local, state, national and global levels. We hope you enjoy At the Boundary.
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