Question on the M4 and AK-47.

#3
Re: Question on the M4 and AK-47.

It depends on multiple factors. Length of barrel, how much powder is still burning as the bullet leaves the muzzle, whether or not a muzzle brake or a suppressor is present.

The shorter the barrel, the more gas escaping the muzzle, the louder the bang is. Bullet diameter and rifle design contributes to some noise but aren't the ultimate deciding factors.
 
#4
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Powder Burns</div><div class="ubbcode-body">It depends on multiple factors. Length of barrel, how much powder is still burning as the bullet leaves the muzzle, whether or not a muzzle brake or a suppressor is present.

The shorter the barrel, the more gas escaping the muzzle, the louder the bang is. Bullet diameter and rifle design contributes to some noise but aren't the ultimate deciding factors. </div></div>

Well the M4 has a 14.5in barrel with a flash hider were the ak has a 16 in barrel with no flash hider and the 5.56 has a higher gas pressure. Is the M4 louder?

Also what about rounds that have powders designed to be completely burned by the end of the barrel, does that effect noise?
 
#5
Re: Question on the M4 and AK-47.

I've carried an AK in a few training exercises and it's unpleasant to hear without ear plugs. Maybe I'm just used to 5.56mm, but AK rounds sound louder to my ear.
 
#8
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYshooter338</div><div class="ubbcode-body">depends on your muzzle device as well.... just sayin' </div></div>

And you ask this in the shout box why?
 
#9
Re: Question on the M4 and AK-47.

I have to agree that the muzzle device makes a diffrence. My buddy has a smith enterprizes brake on his AK and it seems like its twice as loud as it was before. Otherwise I don't think that either would be noticably louder than the other. Just my two cents.
 
#11
Re: Question on the M4 and AK-47.

HUH ??WHAT?? sorry had my ear plugs in HAHAHA. With out a brake on either the m4 is higher pichted but the ak is just as load I.M.O.
 
#12
Re: Question on the M4 and AK-47.

Like others have said, I think its based out the device on the end of the barrel.

Normally I would say in a straight up comparison the AK is louder. It "booms" a bit more than just the "pop" of the M4. However, I got a buddy who has a Armalite with a JP enterprise style break on it and that thing is almost impossible to shoot for long periods of time. Just from the noise it makes. I think that the break must bounce the noise straight back at the shooter or something.
 
#14
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kevin7714</div><div class="ubbcode-body">I think with the standard M4 flash suppressor vs. the AK slant brake, the ak is louder when shooting. I've shot both without ears and it sucks.

I know this sounds silly, but the AK has a louder boom and the AR has a louder crack when the bullet is traveling.

K </div></div>

What about an M4 with FH and an AK with no muzzle brake?
 
#16
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LoneWolfUSMC</div><div class="ubbcode-body">The "slant brake" on an AK isn't really a brake. It's pretty close to no muzzle device at all. It's just intended to keep some of the muzzle rise down.

</div></div>

+1.........this is an ak slant brake

slant.jpg
 
#19
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kevin7714</div><div class="ubbcode-body">I think with the standard M4 flash suppressor vs. the AK slant brake, the ak is louder when shooting. I've shot both without ears and it sucks.

I know this sounds silly, but the AK has a louder boom and the AR has a louder crack when the bullet is traveling.

K </div></div>
Not as silly as shooting without ears
 
#21
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kevin7714</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LoneWolfUSMC</div><div class="ubbcode-body">The "slant brake" on an AK isn't really a brake. It's pretty close to no muzzle device at all. It's just intended to keep some of the muzzle rise down.

</div></div>

+1.........this is an ak slant brake

slant.jpg
</div></div>

Ha I knew that!
 
#22
Re: Question on the M4 and AK-47.

Like others have mentioned the muzzle device makes a big difference. For example, my 3Gun AR is as loud if not louder than my M1A Scout. Granted it also depends on where you are in relation to the muzzle, ports, etc.

All things being equal, I think the 7.62X39 is "louder" than the 5.56. To me it's a deeper sound if that makes sense. I've never been shot at so cannot comment on that. The closest I've come was when it was my turn to pull targets at Camp Perry. All you really heard was the bullet crack with some gun fire way off in the distance. There also weren't any 7.62X39's being fired either
wink.gif
...
 
#23
Re: Question on the M4 and AK-47.

i have trouble believing any of the posters who say an ak is louder....i dont know about decibels but i know that an ar will make yer ears cry for hours but an ak is just a nice low thud that dont require plugs.
 
#24
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: marduk185</div><div class="ubbcode-body">i have trouble believing any of the posters who say an ak is louder....i dont know about decibels but i know that an ar will make yer ears cry for hours but an ak is just a nice low thud that dont require plugs. </div></div>

Check out this video the guy actually says the AR-15 is like a nuclear explosion, that is screams noise, don't remeber where in the video but its like 31 minutes long, an AR-15 and AK-47 comparison video.

http://www.youtube.com/watch?v=G4OmlORv6qs
 
#25
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: viav13</div><div class="ubbcode-body">Like others have said, I think its based out the device on the end of the barrel.

Normally I would say in a straight up comparison the AK is louder. It "booms" a bit more than just the "pop" of the M4. However, I got a buddy who has a Armalite with a JP enterprise style break on it and that thing is almost impossible to shoot for long periods of time. Just from the noise it makes. I think that the break must bounce the noise straight back at the shooter or something. </div></div>

Well I do know that the M4 is a sharper report giving it a POP or POW type sound vs the more drawn out boom from an AK shot. Maybe some people will perceive the AK shot to be louder for this reason? While other perceive the M4 shot to be louder because of the sharper report?
 
#26
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Baltar</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: viav13</div><div class="ubbcode-body">Like others have said, I think its based out the device on the end of the barrel.

Normally I would say in a straight up comparison the AK is louder. It "booms" a bit more than just the "pop" of the M4. However, I got a buddy who has a Armalite with a JP enterprise style break on it and that thing is almost impossible to shoot for long periods of time. Just from the noise it makes. I think that the break must bounce the noise straight back at the shooter or something. </div></div>

Well I do know that the M4 is a sharper report giving it a POP or POW type sound vs the more drawn out boom from an AK shot. Maybe some people will perceive the AK shot to be louder for this reason? While other perceive the M4 shot to be louder because of the sharper report? </div></div>

I agree
 
#28
Re: Question on the M4 and AK-47.

Find a local range with decent outdoor distance, you'll encounter both no doubt in short time. (Being in Oregon, should be no problem.)

In my opinion, AKs, definitely louder. ARs have more of a snap, AKs a boom.

Out of curiosity, why the curiosity?
smile.gif
 
#30
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ishikawa</div><div class="ubbcode-body">My parents say my AK sounds like a cannon when they hear me shoot something while hunting with it.../shrug </div></div>

A 7.62x39 is nothing like the .300 WIN MAG that I hunt with. 3-4 x more powder than a 7.62x39 or 5.56x45.

I've fired a 30-30 before and its loud but not that loud like a bang, a .308, 30-06 or .300 is much louder IMHO.

A .300 sounds like a higher pitch CRACK!!!!! Due to the bullet traveling at over 3000 ft per second. It is much louder than a 30-30 both up close and from a distance to my ears.
 
#31
Re: Question on the M4 and AK-47.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BigBrother</div><div class="ubbcode-body">
Out of curiosity, why the curiosity?
smile.gif
</div></div>

Oh me and my friend were talking about this once and he wanted to know and I thought of it as interesting so I decided to go ask on a forum with people who shot both.
smile.gif
 
#33
Re: Question on the M4 and AK-47.

An interesting apples to oranges comparison. The AK seems to have a lower pitched explosive sound while the AR has a higher pitched crack. As we perceive lower pitches better ( at least us shooters with damaged ears ), I think most people would say the AK is louder. I am not sure that this would be true if measured with instruments however. Perhaps someone with the right equipment and too much time on their hands can answer this one for us.
 
#34
Re: Question on the M4 and AK-47.

We shot both of them side by side about a month ago to find out which was louder. The AK was louder at that time, but it has no break, and the AR had the standard birdcage break. But at that moment about 9 people or so all agreed that the AK was louder, just keep in mind all the variables.
 
#35
Re: Question on the M4 and AK-47.

I say hmmmm.....

According to the poll with 33 votes so far, 13 voted for the 5.56, 17 voted for the 7.62x39 and 3 voted for both being louder. So its pretty close so far....interesting.
 
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