the military channel gives arbitrary scoring based on how long they were in service, how reliable they were, how accurate, how powerful and a couple others that I can't remember since it's been years since I've watched the military channel but the deciding factor between the AK47 and the M4 would have been service life which if the M4 had been around for 40 more years would have most certainly beaten out the AK.
just my .02 on that subject.
all guns lost in a tragic smelting accident.
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