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MTT TL · November 26, 2009, 09:36 AM

If you are talking about .50 BMG M903 you need 3.5" of steel or you can use 2 X 1" plates with a 6" gravel baffle between them. Either would make the gate really, really heavy and likely impractical.

The old .50 BMG AP round would require about 1" of steel but I don't know if that would stop the 12.7mm. This would also be really heavy.

Most agencies don't bother trying to make the gate itself armored as it is not really practical. Putting layered overlapping barriers is a much cheaper and easier solution. A better solution would be barrier material and make the gate lightly armored, say against 7.62X39. This can be stopped by ".5 plate at 100 meters. Even that would be heavy.

I guess I should mention I am talking about armor plate, (face hardened steel) not some pot metal mixed up in someone's backyard metal shop. If that were the case you would need more.

November 26, 2009, 09:36 AM	#2
MTT TL Senior Member Join Date: October 21, 2009 Location: Quadling Country Posts: 2,780	If you are talking about .50 BMG M903 you need 3.5" of steel or you can use 2 X 1" plates with a 6" gravel baffle between them. Either would make the gate really, really heavy and likely impractical. The old .50 BMG AP round would require about 1" of steel but I don't know if that would stop the 12.7mm. This would also be really heavy. Most agencies don't bother trying to make the gate itself armored as it is not really practical. Putting layered overlapping barriers is a much cheaper and easier solution. A better solution would be barrier material and make the gate lightly armored, say against 7.62X39. This can be stopped by ".5 plate at 100 meters. Even that would be heavy. I guess I should mention I am talking about armor plate, (face hardened steel) not some pot metal mixed up in someone's backyard metal shop. If that were the case you would need more. __________________ Thus a man should endeavor to reach this high place of courage with all his heart, and, so trying, never be backward in war.