Our military adopting the Grendel?

[stanc]

That Sir is a very true staement, However the resorces that we currently have pales massively to that time period.

True, but it's relative. The number of troops deployed today also pales massively compared to WWII.

Could it be done today, yes, I believe so. But a caliber change or adoption during a conflict is not wise. Hey the Guy that has the Grendel needs some 5.56 because we don't any Grendel ammo

If we were in a "real" war against a large, organized army (as in WWII, Korea, or even Vietnam), I'd agree.

But for the present conflict, fighting a few thousand insurgents, it seems to me it could be handled.