AR-15 Shot Underwater – Result is WEAK


LOL 4 feet of travel… Pretty funny. I wonder if the shock wave you feel underwater is pretty strong?  I would want to be very confident with my hearing protection before trying anything like this.



adam June 25, 2010 at 04:02 pm

i wonder if that was a gas system or piston.


Admin (Mike) July 2, 2010 at 02:21 am

hmm yea good question.. I wonder if one would work better than the other under water.


Antibubba June 25, 2010 at 04:32 pm

It would be interesting to see if round-nosed bullets would work better.


Aaron Spuler June 25, 2010 at 07:59 pm

Pretty much all guns fired underwater are not going to have much bullet travel. On Mythbusters they did an episode to see how much water was needed to protect you from different types of gunfire. Surprisingly, not very much, even for the hunting rifle rounds (maybe a .308 — not exactly sure as it was several years ago that I saw that episode).


Davis F June 26, 2010 at 09:14 pm

The .50 BMG didn’t get very far in the water. But remember, there were fired INTO the water, so the rounds exploded on contact and dissipated the force.

I’m sure a .50 BMG would do some pretty serious shockwave based damage to anyone near it in the water :)

I’d be interested to see how a TMG (Total Metal Jacket) .50 BMG round (Teflon coated of course :)) would do underwater. Especially if the barrel was sealed somehow (The SEALS do it) so that the bullets energy is not wasted getting through the water in the barrel. I’d give it a good 10 ft travel distance.. Hehe..


Admin (Mike) July 2, 2010 at 02:28 am

Was that in the same mythbusters episode where they tried to saw a circle around themselves with bullets like trinity in the Matrix movie?



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