Shooting Under Water

fed007

fed007

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This picture makes me think... Milspec assualt rifles... can they shoot under water and would you have any ear drums left after the event?

At what point do they fail to shoot? Mud , sludge, water, snow , ice, sand....

Which is the toughest service rifle in existence? AK/AR? VZ??!?! :D

(I'll vote AR-180B!!!!)

fed007

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I'm not an expert by any means but I'd wager that a barrel full of water would cause an over pressure situation. I've heard special forces block off their barrels when submerged to prevent this.I'd also would hate to see what would happen to anything steel when constantly exposed to water. I also can't think of any reason I'd want to go swimming with my favourite black rifle. Extreme fishing maybe?
 
haha - yeah I should have thought about the density of the water in the barrel... (it was a quick post for entertainment) that kind of force would definitely split a barrel ... hhmmm or would it!?

aside, which rifle of current or historical has the ultimate rating of reliability - I am guessing AK?

(Armed SASK! I thought I read from Armalites site that the 180 is mil spec ... , the whole concept of the design was to be economical stamped service rifles... also I think they also state it is "mil spec" whatever that is ... maybe a sales gimmick?)

fed007
 
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Actually you can fire any firearm under water as long as the barrel is full of water with no air spaces and you do not go deeper than 30ft or 1 atmosphere of pressure (some say 15ft is the limit). You guys really need to research before posting.
 
You shoot can under water has been done with a pistols and it is safe but the recoil is tremendous and I believe they also fired a M16 and a AK47 as well but the firearm must be completely submerged as any air in the barrel will cause a situation that is extremely hazardous
 
interesting. research nahhh - we have all the experts we need here at CGN.

so the bullet becomes a high speed, high presure plunger for the length of the barrel at which point it exits and becomes a speeding bullet again!

ultimately the density of and ambient air pressure have effects on rifle performance under "above water" conditions. So it is fair to scale that under water, function would remain but performance would be decreased due to increased ambieant density and pressure.

At what depth does the barrel decide to blow apart as opposed have the integrity to force out the water from the barrel?

This might explain why the mighty AR-15 is no match for submarines!

fed007
 
H&K made a pistol designed to shoot under water.

Heckler & Koch P11 Underwater Pistol
Calibre: 7.62mm x 36
Country of Origin: Germany
Designation: Pistol
Cartridge: Unknown
Production Date: Unknown
Dimensions:
Sight: From front to rear 146mm
Length: 200mm
Width: 60mm
Weight Loaded: 1200g
Battery Unit Weight: 700g
Capacity: 5 rounds

Very little is known about the HK P11. It is a special pistol that fires underwater. What is known is that it will fire five shots, but after the five shots are fired, there is a significant delay in reloading, even slower than a revolutionary war muzzleloader. You must send the upper unit back to the factory for reloading!
HKPRO recently acquired more detailed information about the P11. It was designed in the 1970s, and entered service in 1976. It has never been officially acknowledged by HK. It fires darts of 7.62 x 36 calibre either above or underwater. The effective range of the P11 is reported at 30 meters above water, with a report barely louder than an MP5SD. Underwater, the effective range is 10-15 meters.
The P11 is reportedly in service with German combat divers, the British SAS, and 100 units to U.S. specops forces. It is also used by Dutch, Danish, Norwegian and Israeli combat divers.

P11.gif


p11-3.jpg

p11cover.jpg

p11diagram2.jpg


We always cycled the slide or pulled back the charging handle a bit when we exited the water to allow the water to drain from the barrel.
 
for someone not familliar with how the inside of an AR should look, i'll assume that is after the water induced KB?

I also recall seeing something (prob. a movie-cant remember) where a bunch of soldiers were taping condoms over the end of the barrels of thier M16's. Now i've done some wierd stuff in bed but...
 
ollie said:
for someone not familliar with how the inside of an AR should look, i'll assume that is after the water induced KB?

I also recall seeing something (prob. a movie-cant remember) where a bunch of soldiers were taping condoms over the end of the barrels of thier M16's. Now i've done some wierd stuff in bed but...
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It was G.I. Jane. I hate that movie.
 
The condom trick is in a lot of movies, more an dirt and mud issue I believe. I read that Seals in Vietnam also used "mud plugs", basically a foam ear plug jammed in the muzzle. First shot blew it out.
 
fed007 said:
Armed SASK! I thought I read from Armalites site that the 180 is mil spec ... , the whole concept of the design was to be economical stamped service rifles... also I think they also state it is "mil spec" whatever that is ... maybe a sales gimmick?
Click to expand...
AR180, yes. AR180B, I doubt it. The thing has a plastic lower.
 
cool, this thread dredged up the Heckler & Koch P11 (never knew it existed)

Also what exactly is broken in those big pics?

About the air bubbles , I think your supposed to siphon them out manually :D

fed007
 
fed007 said:
interesting. research nahhh - we have all the experts we need here at CGN.

so the bullet becomes a high speed, high presure plunger for the length of the barrel at which point it exits and becomes a speeding bullet again!

ultimately the density of and ambient air pressure have effects on rifle performance under "above water" conditions. So it is fair to scale that under water, function would remain but performance would be decreased due to increased ambieant density and pressure.

At what depth does the barrel decide to blow apart as opposed have the integrity to force out the water from the barrel?

This might explain why the mighty AR-15 is no match for submarines!

fed007
Click to expand...

Yes it is amazing the number of folks who do know what they are talking about on this site as opposed to smartasses who don't have a clue . The depth that one can safely fire (if one can truely be safe doing this) has been figured out to be from 5-15 feet and by some stats up to 1 atmosphere of pressure or around 30ft.
 
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