New Army "Caliber Configuration Study"

[cory]

Expanding that analysis to include a 30rd 5.56 magazine and a 25rd Grendel Magazine.

I have a Pmag that weighs 5ozs and a GI mag that weighs 4ozs. We'll use the Pmag as a Grendel GI mag would probable have to be slightly stiffer.

10 Pmags weigh 3.125lbm - 300 5.56 rounds capacity
12 Pmags weigh 3.75lbm - 300 6.5 Grendel round capacity

We're looking at 3lbs to worst case 5lbs added to the combat load.