America's New Assault Rifle Caliber?

摘要

A good deal of research has been conducted by the military and law enforce-ment to identify a caliber that will eclipse the performance of the 5.56x45mm round and can be readily and cost effectively adopted to the current AR-15/M16 platform. The two early candidates for these requirements, the 6.8mm and the 6.5mm Grendel, appear to have been dropped because of high transition costs and extensive retooling of the platform now in service and its feed system.