By 1st Tactical Studies Group (1TSG) July 7, 2025 The U.S. ARMY and Marine Corps need a multi-caliber, Modular Weapon System (MWS) that can shoot all the major cartridges to meet the myriad of threats on the 720 degree, Non-Linear Battlefield (720 NLB) based on upgraded the combat-proven, M16/M4 rifle/carbine family whose manual-of-arms is in the muscle memory of every …

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