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Combination Muzzle Brake, Flash Suppressor , Sound Suppressor


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I think the functional effects of the mechanisms cancel each other out in some of the functional area.

 

Muzzle brakes will eject gas to the side which is the opposite of what a flash suppressor is attempting to do which is reduce the flash visible.

 

Suppressors (auditory) need to contain the gases which is the opposite of what a muzzle brake does.

 

Now, sound suppressors ALSO suppress muzzle flash by their mechanism.

 

Size of the suppressor relates to caliber and material as well as rate of fire. MG suppressors for 7.62mm tend to be on the large size and steel so as to handle the large amount of heat. You can get by with a smaller 7.62mm suppressor for a bolt action rifle. The larger it is, the better it will suppress. Look at the size of the deLisle carbines for example.

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I was just thinking, what type of 5.56mm or 7.62 would need a muzzle brake?

 

 

12.7 I can believe, but the smaller calibres? As a 13 year old I fired SMLE .303, as did smaller and lighter cadets, and so long as you pull the butt into the shoulder there was not much recoil to worry about.

Edited by DougRichards
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I think the functional effects of the mechanisms cancel each other out in some of the functional area.

 

Muzzle brakes will eject gas to the side which is the opposite of what a flash suppressor is attempting to do which is reduce the flash visible.

 

Suppressors (auditory) need to contain the gases which is the opposite of what a muzzle brake does.

 

Now, sound suppressors ALSO suppress muzzle flash by their mechanism.

 

Size of the suppressor relates to caliber and material as well as rate of fire. MG suppressors for 7.62mm tend to be on the large size and steel so as to handle the large amount of heat. You can get by with a smaller 7.62mm suppressor for a bolt action rifle. The larger it is, the better it will suppress. Look at the size of the deLisle carbines for example.

 

The De Lisle also had the advantage of firing a pistol round at subsonic velocity.

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All-metal sound suppressors have all three effects

 

sound suppression- somewhat

flash hiding - very good

muzzle brake effect - little effect (difference can be felt, as the peak recoil force is reduced)

compensator effect - little reduction of muzzle rise

accurizer effect - somewhat less dispersion (and very different zero than without sound suppressor)

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Is there any weapon that has a combination sound suppressor, muzzle brake and flash suppressor?

 

XM-177?

 

 

The main purpose of the moderator muzzle device was to change the sound of firing to not sound like an M16 and more like an AKM to deceive the opponent in the dense jungles. Hiding the giant fire balls that such a short 556 makes are also welcomed.

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When I met AAC's owner/founder with Oleg something like 15 years ago, he described how they had figured out the effect of dispersion on their suppressor combos and built into their later muzzle attachment devices an indexing effect so that you could be sure that when you installed the suppressor after zeroing, you were getting a consistent poi shift. In some cases, depending on firearm/ammo/suppressor combos and proper indexing, you could get an effective slight rise in point of impact that was very predictable for scope adjustments.

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I'm not sure that suppressors increase accuracy - if they did, I would expect to see them on target rifles here in the UK and in other permissive countries. On the other hand, in my experience, they certainly do not detract from accuracy.

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I thought the compensator or whatever that is on the XM177 was mainly to reduce otherwise excessive muzzle flash. Does M855 and newer play nicer with short barrels than M193?

 

M855 A1 has been specifically designed to be fired from shorter barrels. M855 was designed when the M16 was still the general issue rifle.

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Just what do muzzle boosters do? I'm still not clear about them.

In the Maxim gun (or the MG42 and similar recoil action guns) the booster redirects gases onto the barrel muzzle to push back on it to activate the action by pushing the barrel rearwards. Actually now thinking about it, the barrel acts as a piston to move the mechanismn.

Edited by Panzermann
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That makes sense. I had looked at rhe wiki before posting, but are boosters on shorty AKs the same thing?

 

Kind of. The big multipart muzzle devices on the shorty bulgarian AKs or the famous one from the AKS-74U are basically little gas chambers at the muzzle to dam up gas to create more pressure to cycle the action, because these short barrels do not leave enough time to build up enough pressure. The bullet uncorks the bottle too early if you will.

 

 

 

I think they're more / just a conical type of flash hider.

 

A case of it depends. Though most of the time AK muzzle devices are compensators and/or brakes and not flash hiders. The famous slant cut muzzle device does nothing to hide the flash and the AK-74 one is a flash enhancer if anything, but a very effective brake and compensator. Off the top of my head I cannot think of a military issue AK coming with a flash hider except the Galil and R4 and related rifles.

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That makes sense. I had looked at rhe wiki before posting, but are boosters on shorty AKs the same thing?

 

Kind of. The big multipart muzzle devices on the shorty bulgarian AKs or the famous one from the AKS-74U are basically little gas chambers at the muzzle to dam up gas to create more pressure to cycle the action, because these short barrels do not leave enough time to build up enough pressure. The bullet uncorks the bottle too early if you will.

Dwell time

 

 

 

I think they're more / just a conical type of flash hider.

 

A case of it depends. Though most of the time AK muzzle devices are compensators and/or brakes and not flash hiders. The famous slant cut muzzle device does nothing to hide the flash and the AK-74 one is a flash enhancer if anything, but a very effective brake and compensator. Off the top of my head I cannot think of a military issue AK coming with a flash hider except the Galil and R4 and related rifles.

 

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What about 'muzzle cups'? I can't find much mention, but I've seen photos (mostly on AKs) of a cup-like device on the muzzle that seems to enclose a brake/suppressor and apparently is intended to direct muzzle blast from a brake back forward, instead of to the sides. It would seem to negate the brake's advantages, but am I missing something?

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