AR500 Armor VS M855A1 & M193 (14.5, 16 & 18″ Barrels)
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We know that M855a1 and M193 will go through AR500 steel armor effortlessly with a 20" barrel, but what barrel length does it take for this to work? Will a 14.5" cut it? 16"? 18"? Does it require a 20" barrel?
Let’s find out.