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KWA KM4S Tactical - Bad Stock Barrels?


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#1 whiterabbit05

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Posted 29 August 2008 - 04:10 PM

Someone on a different forum told me that the barrel the gun comes with is very poor.  That by looking down the barrel it has almost a "ripple" effect and not smooth at all.

Has anyone here had the same problem or know of this problem?  

I just ordered my KM4S and this worries me a little =\

Thanks!

#2 brooklyn468

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Posted 29 August 2008 - 06:24 PM

View Postwhiterabbit05, on Aug 29 2008, 07:10 PM, said:

Someone on a different forum told me that the barrel the gun comes with is very poor.  That by looking down the barrel it has almost a "ripple" effect and not smooth at all.

Has anyone here had the same problem or know of this problem?  

I just ordered my KM4S and this worries me a little =\

Thanks!

My KM-4a1's barrel is nice. No "ripples" at all, but no tightbore. Suits me  :lol:

#3 Shmoogly3

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Posted 29 August 2008 - 06:47 PM

View Postbrooklyn468, on Aug 29 2008, 06:24 PM, said:

My KM-4a1's barrel is nice. No "ripples" at all, but no tightbore. Suits me  :lol:
If the km4 s- system has a ripple effect in the barrel than that would mean that all kwa gun's barrels have a ripple effect. Does that make any sence to you that kwa would make there barrels wavy in the inside. Whoever told you this is smoken something wacky! Kwa inner barrels come at around on an average 6.05mm, you'd be lucky to get one that's 6.04mm. They get the job done, but if your looking for some consistency in your shot I would suggest buying a prometheus tight bore barrel.

#4 whiterabbit05

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Posted 29 August 2008 - 07:53 PM

I'll just quote the guy:

"Just to give you a heads up when you get that KWA in, you might want to get another inner barrel. Mine lasted all of two skirmishes. And several other people that I've talked to have had the same problem. The gun is awesome I love it, but there inner barrel is crap."

"Looking down the barrel it has almost a "ripple" effect. It's not smooth at all. And from what I've gathered from vendors and buyers is that is fairly common. It causes the bb's to tumble way bad, and shaves them. It almost looks like little feathers coming out of the barrel. There 2 distinct different places in my barrel that is so chewed up it looks like a brier patch. Which killed my FPS and my accuracy. Since putting the new inner barrel in, it's back shooting like a dream.

It's also talked about on the KWA forums along wit a fairly good compatibility list."

Edited by whiterabbit05, 29 August 2008 - 07:54 PM.


#5 Guest_allizard_*

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Posted 29 August 2008 - 09:05 PM

So many thoughts ran thru my head when I read the "Ripple" quote.  

Since I'm trying to keep this a civilized discussion I'll keep this short.  What ever you read on the forums.  You take it with a grain of salt.  Any "Spirited" comments, make sense or not... it's best draw your own conclusion.  

however, think about this... when you buy a brand new car.  How often you replace the stock parts with aftermarket parts right away?!  Then apply that logic to your AEG.  Why would a company put in BAD part and expect you to spend more to replace the part.  Doesn't make sense.  In fact, what's about stock TM, Stock CA?!!!  Why would they put in a 6.08mm barrel in the gun?

#6 Shmoogly3

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Posted 30 August 2008 - 08:46 AM

I've shot almost 20,000 rds out of my stock barrel and it still shoots fine. I finally got my prometheus barrel in the mail and installed it.

Edited by Shmoogly3, 30 August 2008 - 08:46 AM.


#7 whiterabbit05

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Posted 30 August 2008 - 09:35 AM

View Postallizard, on Aug 30 2008, 12:05 AM, said:

So many thoughts ran thru my head when I read the "Ripple" quote.  

Since I'm trying to keep this a civilized discussion I'll keep this short.  What ever you read on the forums.  You take it with a grain of salt.  Any "Spirited" comments, make sense or not... it's best draw your own conclusion.  

however, think about this... when you buy a brand new car.  How often you replace the stock parts with aftermarket parts right away?!  Then apply that logic to your AEG.  Why would a company put in BAD part and expect you to spend more to replace the part.  Doesn't make sense.  In fact, what's about stock TM, Stock CA?!!!  Why would they put in a 6.08mm barrel in the gun?

I understand that nothing on the internet can be taken at face value.  Which is why I made this thread to find out more information and to receive opinions =).

#8 vic_man4

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Posted 30 August 2008 - 01:38 PM

View PostShmoogly3, on Aug 30 2008, 08:46 AM, said:

I've shot almost 20,000 rds out of my stock barrel and it still shoots fine. I finally got my prometheus barrel in the mail and installed it.

Hows the "no break-in" peroid working for you on your prom :lol: I like them cause its instant results unlike DBC's brass barrels that need breaking in. And for stock barrel, mine has no rippling in it what so ever.

#9 Shmoogly3

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Posted 30 August 2008 - 06:15 PM

I was very suprised! This is my second Prometheus barrel and it is 285mm long, my first prometheus barrel was beastly 550mm barrel for my m16 and that took about 700rounds to break in. This new 285mm barrel was shooting perfectly from the first shot and I didn't even clean it. In a standing postion w/ semi auto at about 70 ft I had 3 bbs touching each others holes (the grouping was about 1-2mm apart from each other, literally)! Then I took it full auto and it was a perfect stream of bbs. Thats with the stock hop up bucking too......

Edited by Shmoogly3, 30 August 2008 - 06:15 PM.


#10 vic_man4

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Posted 30 August 2008 - 07:14 PM

View PostShmoogly3, on Aug 30 2008, 07:15 PM, said:

I was very suprised! This is my second Prometheus barrel and it is 285mm long, my first prometheus barrel was beastly 550mm barrel for my m16 and that took about 700rounds to break in. This new 285mm barrel was shooting perfectly from the first shot and I didn't even clean it. In a standing postion w/ semi auto at about 70 ft I had 3 bbs touching each others holes (the grouping was about 1-2mm apart from each other, literally)! Then I took it full auto and it was a perfect stream of bbs. Thats with the stock hop up bucking too......

Im looking into another Prom inner barrel for a JP kit, probably going to be a 550mm aswell. You should to a compairison between your 285mm and 550mm in accuracy and range :lol: I'd love to see the results.

#11 Shmoogly3

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Posted 31 August 2008 - 04:43 AM

yea no problem! Is there any specific way you want me to test the barrels like maybe a specific distance?

#12 vic_man4

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Posted 31 August 2008 - 07:54 AM

View PostShmoogly3, on Aug 31 2008, 05:43 AM, said:

yea no problem! Is there any specific way you want me to test the barrels like maybe a specific distance?

Go from 50 feet at a 10 inch target, then 100 feet at another 10 inch target and see the groupings on each target for each gun at the different lenghts, make sure you pick a nice day though, also post what weight pellets you are using and the FPS for each gun so we get the "variables" right when compairing the two.

Edited by vic_man4, 31 August 2008 - 07:54 AM.


#13 Shmoogly3

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Posted 31 August 2008 - 05:15 PM

This may take a while, but i can assure you that you will get the specs from me.

#14 vic_man4

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Posted 31 August 2008 - 06:30 PM

View PostShmoogly3, on Aug 31 2008, 05:15 PM, said:

This may take a while, but i can assure you that you will get the specs from me.

I dont think that it will have any relivance to the KWA forum (Allizard might drop the hammer on the thread it you post the results), so just private message me and anyone else who wants the results, thanks :D

Edited by vic_man4, 31 August 2008 - 06:31 PM.


#15 Shmoogly3

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Posted 31 August 2008 - 08:48 PM

I'll first do my 285mm prom barrel testing and send it to you vic man. Maybe I can get it to you by tomorrow.

#16 bchang953

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Posted 02 September 2008 - 06:39 PM

The stock inner barrel isn't bad at all. Compared to other brands like CA which have 6.08mm barrels the KWA with its 6.05 is good. There is no "rippling" I have the KWA CQB and it shoots great. Still I might be upgrading to a Prom Tightbore which is .02 tighter but still the KWA barrel is fine. That guy is retarded, the brier patch I'm sure is just some dirt/moisiture stuck in his barrel, he's probably never cleaned it before.

#17 Shmoogly3

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Posted 03 September 2008 - 12:10 PM

Prometheus are 6.03mm not 6.02mm, but it doesn't matter because they perform like there 6.01mm without the jamming issue of a 6.01mm!

#18 elite

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Posted 03 September 2008 - 02:36 PM

"Prometheus are 6.03mm not 6.02mm, but it doesn't matter because they perform like there 6.01mm without the jamming issue of a 6.01mm!"


bchang said ".02 tighter". so 6.05- .02= 6.03.

Edited by elite, 03 September 2008 - 02:37 PM.


#19 Guest_allizard_*

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Posted 03 September 2008 - 08:05 PM

ok this thread is way out of topic... I'm locking it.




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