Think you might need to slap a 40mm friend on the bottom of your XCR if you want to feel comfy fighting Arnold and his pals.Something to think about:
I know there are a number of ppl in this forum who are afraid of the 'Zombie" attack. A baseball bat and 5.56 would do fine against that soft threat. Now what if the machines do try to take over? Thats why I am getting a 6.8 for my XCR. A tungston core armour piercing round.. hmmmm What do you all think?