65G and Future Urban Warfare

[stanc]

But I keep hearing about this .264 USA which is based on the Grendel but has less case taper and fits in standard AR mags. And they are working on polymer casings for it.

.264 USA is too long to fit the standard AR15 mag well.





It needs either an AR10-size rifle, or a new receiver intermediate in length between the AR10 and AR15.