05-24-2018, 10:02 PM
(05-24-2018, 06:15 PM)bfine32 Wrote: AR-15 is exactly the same as the M16, except it can only fire semi-automatic.
It is my understanding that there is a variance in the chambering between 5.56 NATO and .223. There is some slight difference and that is also different between the AR-15 and the M16/M4. I want to say the neck on the case is slightly longer on the .223, meaning it can't be chambers in the military variant, but the civilian variant can chamber a 5.56.
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"The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little." - FDR