Compensators or recoil reducing FH's for PDW

canukstik

canukstik

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Ok so I'm in the process of building an AR PDW (7.5 inch barrel) i will be using all heavy parts i.e. FA BCG and a 9mm buffer etc. i have a Lothar Walther SS medium profile barrel on there. so my question to those out there with the knowledge or experience, in the sole interest of recoil reduction, what compensator is available right now that has the most recoil reduction

(i'm not interested in hiding my flash, as the likelihood of me ever shooting at night is almost nil)

and as a secondary question, is there any FH's or Comps that maintain a decent velocity of a standard round? any that add fps in comparison to others?

and before anyone says it, i've read the flash hider testing thread on this forum. i didnt find a sufficient answer to my question on there

thanks in advance for any answers
 
canukstik said:
Ok so I'm in the process of building an AR PDW (7.5 inch barrel) i will be using all heavy parts i.e. FA BCG and a 9mm buffer etc. i have a Lothar Walther SS medium profile barrel on there. so my question to those out there with the knowledge or experience, in the sole interest of recoil reduction, what compensator is available right now that has the most recoil reduction
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You are going to get a bunch of "this is what I use so it's the best" answers regarding this. As far as actual testing of devices, the only comprehensive test I've read about put the Dlask A6 ahead of others.

canukstik said:
and as a secondary question, is there any FH's or Comps that maintain a decent velocity of a standard round? any that add fps in comparison to others?
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Don't worry about this. Velocity loss between different comps and brakes is negligible for your barrel length.

EDIT: IMO the biggest thing you have to worry about with a 7.5 is muzzle blast. You may want to consider something like the new ATRS comp or the Noveske KX3, both help to re-direct muzzle blast forward. I don't think DLASK makes the XB2 anymore but I could be wrong about that.
 
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without sounding like the "this is the best kool-aid ive ever drank" guy...

my vote is for the surefire mb556k...loud as S***, kicks fire out of everywhere, but the gun doesnt move AT ALL!

im using mine on a 10.5" LMT...so a 7 should be fairly similar.

I agree with the point on the KX3 directing blast downrange (a huge favour to your fellow shooters), but didnt find it to compensate or look that decent on my other 10.5.

hope this helps
 
I'm curious as to how the PWS CQB acts as a muzzle brake in any sense, (the one I shot did not feel like it reduced recoil at all), as all the gas is still being thrown directly downrange.

If you want MAXIMUM recoil reduction at the cost of EVERYTHING else, get the Benny Hill Rolling Thunder brake. Very popular with 3-gunners.
 
CarbineOne said:
I'm curious as to how the PWS CQB acts as a muzzle brake in any sense, (the one I shot did not feel like it reduced recoil at all), as all the gas is still being thrown directly downrange.
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I don't think it's a true muzzle brake in that sense. While the noise is definitely directed forward it certainly seems to provide some degree of compensation as well, since recoil was noticeably less than on any of my other ARs. As a flash hider... while it's definitely not going to conceal you - it's no "flaming pig", either.

In terms of overall recoil, though... what recoil?! In conjunction with a specialized buffer there's nothing. Minimal kick and no muzzle climb whatsoever. A friend who shot it for the first time today rated it at even less than a .22LR.
 
blaxsun said:
I don't think it's a true muzzle brake in that sense. While the noise is definitely directed forward it certainly seems to provide some degree of compensation as well, since recoil was noticeably less than on any of my other ARs. As a flash hider... while it's definitely not going to conceal you - it's no "flaming pig", either.

In terms of overall recoil, though... what recoil?! In conjunction with a specialized buffer there's nothing. Minimal kick and no muzzle climb whatsoever. A friend who shot it for the first time today rated it at even less than a .22LR.
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I can see it perhaps slowing the recoil impulse with the interim chamber... but other than adding a chunk of weight to the muzzle, it should not affect recoil or muzzle climb.

Recoil matters during rapid fire. Muzzle brakes give you more hits on target in a lower amount of time. That never hurts.
 
CarbineOne said:
I can see it perhaps slowing the recoil impulse with the interim chamber... but other than adding a chunk of weight to the muzzle, it should not affect recoil or muzzle climb.

Recoil matters during rapid fire. Muzzle brakes give you more hits on target in a lower amount of time. That never hurts.
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I don't know what to tell you other than the recoil, muzzle rise, etc. was noticeably less than on a 10.4" LMT (which I tried with both a Phantom and Surefire flash hider). Seeing is believing, though. In combination with a specialized AR buffer it felt like shooting an Airsoft this afternoon...
 
Looking at some pics of the PWS CQB it should provide some braking effect (no compensating effect though) due to the expansion chamber and chamber shoulder it has. IMO it would be very minimal though.

I can't wait to show you guys pics of the new comp/brake I designed. Maybe tomorrow. :D
 
so my question to those out there with the knowledge or experience, in the sole interest of recoil reduction, what compensator is available right now that has the most recoil reduction
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Keep in mind that a 7" barrel means the muzzle velocity is much lower which results in much less recoil to start with. You will find a PDW has much less felt recoil than a full length AR.

The one thing you will quickly discover about a short barreled 223 PDW is the muzzle blast is formidable. Adding a brake to that will make the thing extremely unpleasant to shoot as it will direct blast backwards. You as the shooter will get it right in the face.

It was for that reason alone that I began to design the SPEX brake. We compared all kinds of different muzzle devices and pretty much everything was nasty on a PDW except the devices like the SPEX, KX3 and levang because those direct noise and blast pressure forward.

(i'm not interested in hiding my flash, as the likelihood of me ever shooting at night is almost nil)

and as a secondary question, is there any FH's or Comps that maintain a decent velocity of a standard round? any that add fps in comparison to others?
Click to expand...

In order for a muzzle device to increase velocity, it would have to be very long. Silencers can add 30-50 fps but they are 6-8 inches long and I don't think you want an 8" long muzzle device on a 7" barrel. It would kind of defeat the purpose.
 
Suputin said:
Keep in mind that a 7" barrel means the muzzle velocity is much lower which results in much less recoil to start with. You will find a PDW has much less felt recoil than a full length AR.
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Absolutely.

Suputin said:
The one thing you will quickly discover about a short barreled 223 PDW is the muzzle blast is formidable. Adding a brake to that will make the thing extremely unpleasant to shoot as it will direct blast backwards. You as the shooter will get it right in the face.
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And then some! I didn't even attempt to shoot it until I'd replaced the muzzle brake for this very reason.

Suputin said:
It was for that reason alone that I began to design the SPEX brake. We compared all kinds of different muzzle devices and pretty much everything was nasty on a PDW except the devices like the SPEX, KX3 and levang because those direct noise and blast pressure forward.
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Haven't had a chance to try the SPEX yet. What are the chances of that shortened buffer tube/retractable stock making an appearance in the near future...?
 
Gotta say +1 to this

I started off running a FSC on my stubby...... way too loud.
Easy to say "Pisshhhhh if it shoots faster straighter that is all that matters"
But if you feel like your being punched in the nose everyshot.... and everyone around you is cursing your name.....well..... I found it was not worth it. Switched to the SPEX and found it more enjoyable all around. Will move my FSC onto a longer barr rifle.

BTW thanks for the Spex....



Suputin said:
Keep in mind that a 7" barrel means the muzzle velocity is much lower which results in much less recoil to start with. You will find a PDW has much less felt recoil than a full length AR.

The one thing you will quickly discover about a short barreled 223 PDW is the muzzle blast is formidable. Adding a brake to that will make the thing extremely unpleasant to shoot as it will direct blast backwards. You as the shooter will get it right in the face.

It was for that reason alone that I began to design the SPEX brake. We compared all kinds of different muzzle devices and pretty much everything was nasty on a PDW except the devices like the SPEX, KX3 and levang because those direct noise and blast pressure forward.



In order for a muzzle device to increase velocity, it would have to be very long. Silencers can add 30-50 fps but they are 6-8 inches long and I don't think you want an 8" long muzzle device on a 7" barrel. It would kind of defeat the purpose.
Click to expand...
 
thanks for all the replies fellas, i was aware of brakes throwing lots of gas backwards. so i think i'm going to track down a SPEX, KX3 or a PWS CQB. see how i like it. thanks again fellas
 
canukstik said:
thanks for all the replies fellas, i was aware of brakes throwing lots of gas backwards. so i think i'm going to track down a SPEX, KX3 or a PWS CQB. see how i like it. thanks again fellas
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If you can wait for a week we are just finishing up the production run of our "Eliminator" flash hider. It will be unveiled at the Calgary gun show and in testing has proven to be EXTREMELY effective at eliminating flash.
We have tested them against spex, KX3 and the Dlask flash hider and it has proven to be superior on PDWs in both 223 and 300 Whisper.

As soon as TSC is available we will be doing side by side comparisons of many flash hiders in order to validate this claim. We have a few CGNers who have volunteered their flash hiders from other makers to test head to head as well.
 
alberta tactical rifle said:
If you can wait for a week we are just finishing up the production run of our "Eliminator" flash hider. It will be unveiled at the Calgary gun show and in testing has proven to be EXTREMELY effective at eliminating flash.
We have tested them against spex, KX3 and the Dlask flash hider and it has proven to be superior on PDWs in both 223 and 300 Whisper.

As soon as TSC is available we will be doing side by side comparisons of many flash hiders in order to validate this claim. We have a few CGNers who have volunteered their flash hiders from other makers to test head to head as well.
Click to expand...


like i sadi in my original post though, i am not interested in hiding my flash, i was interested in recoil reduction. how is the new flash hider for that?
 
canukstik said:
like i sadi in my original post though, i am not interested in hiding my flash, i was interested in recoil reduction. how is the new flash hider for that?
Click to expand...

It DOES reduce recoil some, but not as effectively as a true muzzle brake will.
We have 1 of the most effective brakes on the market, but on a short barrelled gun makes them into fire breathing dragons:cool:
 
You might look at the recently released PWS Triad.

PWS-TRIAD-556-128_1.jpg


This offers BOTH flash suppression AND compensation (reduced muzzle flip) even on short barrel AR's.

PWS has a video showing a full-auto 7" AR and the new Triad. Clear difference in flash reduction as well as muzzle rise/controllability.

To view the YouTube video use this link...

http://www.youtube.com/watch?v=cyP6TvRASzg

More details about the triad here:

https://shopquestar.com/shopping65/shopexd.asp?id=1549&bc=no

Mark
 
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