Looking at some M4 uppers, I was given the choice .223 or 5.56 NATO chamber. Aren't these calibers the same? I don't get it. Why choose one over the other? If so, which one?
Would it be worth $50 bucks to add a chrome lined barrel?
Finally, 16" or 14.5". Which ones are the military using?
HELP!!
Would it be worth $50 bucks to add a chrome lined barrel?
Finally, 16" or 14.5". Which ones are the military using?
HELP!!