Home Forums Hunting & Shooting AR and Tactical Rifles What does a Vortex flash hider do?

Maybe I do point out how stupid you can be more than others but I'd really rather just discuss gun stuff without having to resort to petty and/or obscene insults like you tend to do.

Lots of can bolt on over flash suppressors, so gas IS diverted from along the bore line and baffled within the can.

But since you wanted a more specific example, there's THIS one:

http://www.husssh.co.nz/details.html

"A key feature is its filter design, canister port vent holes and inverted cone "....................................dj

The ONLY $60 Silencer on the scene.

I'm [bleep] CRYIN'...AGAIN!!!!!...............

Cryin Again? What because once again you've been PROVEN incorrect?

No need for tears, just buck up and realize that you aren't always correct ............................DJ

You've yet to be right.

THAT ain't NOT funny!................

http://www.husssh.co.nz/details.html

"A key feature is its filter design, canister port vent holes and inverted cone "




I'm not always right, but it's pretty easy to see I am here, one-click is all it takes.

In most cases venting gas other than bore line DOES increase noise but not ALLWAYS. Usually does, isn't Allways does ..........................DJ

No doubt you've a Cough Silencer too.

Laffin'!.............

A unique and innovative design provides barrel harmonic damapening for enhanced accuracy. Another plus...... grin

Her coughing out her azz,ain't exactly "novel"...though it's the only move she's got..................(grin)

It just drives you nuts to be proven wrong doesn't it?.................DJ

I revel in your rampant stupidity...and NOONE drops more balls than you.

Congratulations?...............

inverted cones or venturis were used on boyes antitank rifles in WWII, nothing new here, they were also extensively investigated by Clark when he invented pin guns and compensators for IPSC. Other than being a qualification to a statement, do you really think a device designed for subsonic .22 applies here where the ejecta mass contribution of the gas is less than .04%?

The little 22 silencer was just one example.

The flash suppressor/moderator on the Colt XM177E2 was classified by the ATF as a silencer because it lowers the report of the CAR-15 by 4db or so:



It has the good old traditional "slots" not flutes and LOWERS the sound coming out of the gun enough to be classified as a Silencer by the BATF.

Stick is just flat wrong and won't admit it...................dj

In this case I don't think its the openings that are causing the decrease. Its the much greater interanal volume of the device, acting as an expansion chamber and reduces the barrel exit pressure. and in this case with the shorter barrel amounts to about 1/3 of the total volume of the barrel + device. I have an 11inch ar with the same type of device, although about 2x longer and about 2x the dia.. Although the total length of the assembly was legal, it was not as loud as a 16 in. Anything the BTAF does cannot be considered science or truthful inquiry.

I certainly regard the BATF as a bastion of scientific research either but the fact is that the thingy on the end of the muzzle has slots in it that direct gas in a direction other than the bore line and it reduces the noise coming out of the gun. Thats the point being argued here..............DJ

It ain't the slots or porting that gives that particular flash suppressor/moderator a suppressive quality.
That's for sure.

One needs only to observe the clear differences between the ported standard BOSS and the CR Boss.

The cage on my issued M249P was understood to be more of a muzzle crown protector and a CQB impact device. It sure did not help much at night fires.
One just accepted they would be blinded at every burst.
That's from hands on experience.

The "Tuned port" concept has been around in many forms. That the openings in the device you show are smaller at the beginning is the result of someone cutting them with a circular saw and no other reason, as opposed to EDM such as magnport, (they call theres "metered ports"). I remember when this ban was imposed, which was met with a lot of opposition. The strongest one being that large plastic pop bottles would have to be outlawed because they worked the same way. There was also many complaints as to the way the BATF took their measurments, but they did what they wanted. The BATF countered by saying the had to be pinned and permantly attached. Stick is talking about any opening that allows gas to escape out of the boreline, which this device does, and you are saying that because of a politics the device was measured to have less noise, and I'm saying that any decrease in noise was do to expansion chamber effects. Is that about accurate??

The noise reduction probably is due to the expansion chamber but I haven't seen the data that proves it conclusively so I think you're right but? It's kinda like you'd think that holes perpendicular to the bore axis would raise the noise level but it isn't ALLWAYS the case.....................DJ

The noise reduction probably is due to the expansion chamber but I haven't seen the data that proves it conclusively

No one doubts "always" is a pretty tough qualifier.


Let me build you some. Assume the device is only 2x the dia. of the 5.56 cal, or about 10mm. While the radius only doubled the surface are is a little more than four times the 5.56. Assuming the pressure is the same in both cases, at this distance in the barrel. (take the area, x the pressure after converting from MPa(megapascals to newtons) should be around 55 lbf. Now use the ideal gas law pv=p'v' and find the reduction in pressure as the new volume replaces the old. Recalulate using the new pressure and the same area, or just assume this is what is available to do work, which can be found easily by integrating the Force. This is assuming there are no openings, of course but gives comparison figures of a work load at the openings, in what form you want to build them.

Where does the flux capacitor fit in to all of this?

Sorry, a whole lot of brain power to say the vortex doesn't make the report any louder to my ears but it sure is interesting...

Stop trying to add common sense to this, it just messes up the whole thread.