50 Caliber Sniper Elite® - General Dynamics Ordnance and Tactical Systems

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Are LMGs machine guns that use sniper ammo (.50 cal)? - Quora

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Munitions - General Dynamics Ordnance and Tactical Systems

Leader 50 BMG Revolutionary Ultra-Compact and Lightweight Semi-Auto Bullpup .50 BMG (12.7x99mm NATO) Anti-Materiel/Sniper Rifle for Military Special Operations Forces (SOF) and Civilian Tactical Shooters: Coming Soon to a Theater of Operations