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Dissatisfaction with KWA M4


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#1 sputnik

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Posted 30 August 2008 - 11:58 AM

I am writing this to express the poor quality of my KM4a1. I ordered the KM4a1 from Trinity Airsoft back on 4/30/08. I received my M4 a couple days later and could not be happier! Reading on how it's fully upgraded, there are reinforced parts, etc. I thought to myself how it would cost so little to maintain it. For the first couple months of being a KM4 owner, shooting it was great. I had no complaints whatsoever. Now I am a modest airsoft player. Through the time I've owned this gun I've been to maybe a dozen games at the most, usually a few a month. Even during those games I'll fire about 1k-2k rounds. I'm not too crazy with shooting bb's and overall I've shot a little over 9k bb's.

Then in July, everything took a turn for the worst. In a game up in Mass. there is a cqb field with a mock town built up that is played at at least once a month. During this game (Around the 12th of July) my M4 was behaving normal, no issues or problems, everything is operating as it should. Suddenly, while firing inside the town (semi-only) my gun stops, no clicks, whines, buzzes, nothing. I pull the trigger and nothing happens. I go back to my car, thinking the fuse blew, or motor problems or battery problems. I swap out the respected parts and it's none of the above. Frustrated and unkowing of the need for a star wrench I bring it to an airsmith. What was discovered is the trigger block post had broken clean off the gb shell and was promptly stuck inside. Now I know this is a problem KWA is aware of and is hopefully being resolved. But why would a part that should never break off do so? And another goodie was discovered. The wiring had fried, thanks to the plastic it being attached somehow melted, then shifted the wires in the gb. So to resolve this I ordered a new gb shell from the pro shop as well as some silicone wiring from another store. Once both products were received I had them sent off to the airsmith so I could have my aeg fixed. I come to find out that the new gb shell's threads for the star screws will not fit, they do not match, they cannot be properly screwed in. What is done instead is the screws used to secure hand grips to gear boxes are used and they fit fine.

I'm not happy at all with the stress this is causing, these are uncommon problems at the most, though it appears more and more "lemons" are popping up with the trigger block posts being snapped off. And because of these events, with my aeg breaking in an instant after owning it for little more than 2 1/2 months to me having to dish out a little over 100 to have it fixed, is very disconcerning and is making me very hesitant on buying the KM16 BR dreading the day that trigger block post breaking off too  or other unforseen problems arising.

#2 brooklyn468

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Posted 30 August 2008 - 12:45 PM

MOFSET's have a tendancy to fry the wiring.

Why would you get a MOFSET if you shot semi only? Mine shoots right when I pull the trigger without a MOFSET.

#3 vic_man4

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Posted 30 August 2008 - 01:36 PM

View Postbrooklyn468, on Aug 30 2008, 12:45 PM, said:

MOFSET's have a tendancy to fry the wiring.

Why would you get a MOFSET if you shot semi only? Mine shoots right when I pull the trigger without a MOFSET.

My M4's trigger response with a 8.4v is crazy, Im thinking of getting a MOSFET but there are starting to cause more bad than good on every review I read :lol:

#4 sputnik

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Posted 30 August 2008 - 01:38 PM

I never stated I had MOSFET's in my M4.

#5 brooklyn468

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Posted 30 August 2008 - 01:46 PM

Oh my gosh I feel soooo stupid right now!!!

You sed modest, not mofset!!! :o

I feel really stupid now ... :lol:  :lol:

#6 Shmoogly3

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Posted 30 August 2008 - 06:09 PM

Well the guns that have there trigger blocks breaking left and right are not lemons. It is just a flaw that kwa has to fix. Kwa guns are very good guns except for there trigger blocks. The trigger blocks normally do not break unless you are simotaneously shooting in semi-auto, but if you shoot semi auto for a couple controlled consistent long distant shots your trigger block will last you forever! You should not hesitate on buying the km16 just because of the weak trigger block that kwa puts in there guns. This is airsoft and every shot isn't always going to be dead on. That's why these guns have high rates of fire in automatic. Plus being a normal citizen you can't there is no firearm that you can buy that has fully automatic capabilities, so why not take advantage of airsoft and use your gun in automatic. I would suggest getting a systema trigger switch + wiring. Here's a good buy:

http://www.airsoftpo...oducts_id=26305

#7 Guest_allizard_*

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Posted 30 August 2008 - 06:35 PM

FYI... trigger post breaks happens more often then you think even on other AEG's.  CA, TM, G&P.... etc.  I've seen it happen before many times.  That said, KWA is taking a serious look into this.

#8 rdlu62

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Posted 30 August 2008 - 07:59 PM

Never had a single problem with my KM4A1 and KM4S Tactical. I just got my KM16BR this afternoon. Let's see how it performs in the game tomorrow.   :)

#9 Shmoogly3

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Posted 31 August 2008 - 04:40 AM

I'm trying to save up for my km16. I really want to get it. Hows the finish and look of the gun. Does the barrel have any movement or wobble? How does it shoot? As soon as I get mine I'm gonna swap out the stock barrel for my prometheus 550mm.

#10 rdlu62

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Posted 31 August 2008 - 04:03 PM

View PostShmoogly3, on Aug 31 2008, 05:40 AM, said:

I'm trying to save up for my km16. I really want to get it. Hows the finish and look of the gun. Does the barrel have any movement or wobble? How does it shoot? As soon as I get mine I'm gonna swap out the stock barrel for my prometheus 550mm.

The finish is the same as the M4 series. Of course there's no barrel wobble just like the M4's.

I didn't get the chance to use it in the field this morning. I used my KM4S instead because I want to see how it'll perform with the upgrades that I did. I noticed though is it shoots louder than the M4A1. The KM16 that I got chrono's at 440 FPS on .20 BB's out of the box.

I'll use it as it is for now and change to a Prometheus 509mm barrel after the 45-day factory warranty expires.

There is another thing I noticed that annoys me a little bit though. Perhaps the the KWA guys can explain this. When you accidentally squeeze the trigger while the selector is on SAFE and then putting the selector either on Semi or Auto, the trigger "sticks" a little bit the first time you press it. This is with my KM4S and KM16. Why is that?

#11 rdlu62

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Posted 31 August 2008 - 04:05 PM

Uh-oh. I apologize sputinik, I got a little carried away. I didn't mean to hijack your thread. Peace!  :)

#12 brooklyn468

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Posted 31 August 2008 - 04:13 PM

View Postrdlu62, on Aug 31 2008, 07:03 PM, said:

The finish is the same as the M4 series. Of course there's no barrel wobble just like the M4's.

I didn't get the chance to use it in the field this morning. I used my KM4S instead because I want to see how it'll perform with the upgrades that I did. I noticed though is it shoots louder than the M4A1. The KM16 that I got chrono's at 440 FPS on .20 BB's out of the box.

I'll use it as it is for now and change to a Prometheus 509mm barrel after the 45-day factory warranty expires.

There is another thing I noticed that annoys me a little bit though. Perhaps the the KWA guys can explain this. When you accidentally squeeze the trigger while the selector is on SAFE and then putting the selector either on Semi or Auto, the trigger "sticks" a little bit the first time you press it. This is with my KM4S and KM16. Why is that?

Heh " accidentally " press the trigger. Heh.

I think it is for safety reasons that they do this. Mine is like this too. I personally like it  :lol:

#13 Shmoogly3

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Posted 31 August 2008 - 05:05 PM

my m4 did this too when I first got it, but after puting over 10,000rds through it the sticking stops, it also depends what battery your using. I noticed the 8.4Vs make the the trigger stick even after breaking in the gun. Also, why don't you throw in a 550mm prometheus instead of the regular 509mm. I got it and its amazing. I like to have alittle bit of unique things once and a while.

#14 rdlu62

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Posted 31 August 2008 - 07:28 PM

The sticking doesn't happen on my M4A1 though and it's barely used. I've only put about 300 rounds on it.

If the Promy 550mm doesn't stick out of the outer barrel, I'd certainly put that one in.

Thanks.

#15 Shmoogly3

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Posted 31 August 2008 - 08:38 PM

View Postrdlu62, on Aug 31 2008, 07:28 PM, said:

The sticking doesn't happen on my M4A1 though and it's barely used. I've only put about 300 rounds on it.

If the Promy 550mm doesn't stick out of the outer barrel, I'd certainly put that one in.

Thanks.

You can only put the 550mm in an m16. i suggested it, because I thought it was for the km16. If your getting a barrel for the regular m4 than509mm is the most you could do.

#16 Guest_allizard_*

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Posted 31 August 2008 - 09:43 PM

Shmoogly.. I'm not sure if you got the numbers correct.  

M4 inner barrel length is 363mm and M16 is 509mm.  The inner barrel stops at the end of outer barrel.  Not into the flash hider.

#17 rdlu62

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Posted 01 September 2008 - 05:02 AM

View PostShmoogly3, on Aug 31 2008, 09:38 PM, said:

You can only put the 550mm in an m16. i suggested it, because I thought it was for the km16. If your getting a barrel for the regular m4 than509mm is the most you could do.

yes, i'm getting it for the KM16 but I don't want it sticking out of the outer barrel.

#18 rdlu62

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Posted 01 September 2008 - 05:03 AM

View Postbrooklyn468, on Aug 31 2008, 05:13 PM, said:

Heh " accidentally " press the trigger. Heh.

I think it is for safety reasons that they do this. Mine is like this too. I personally like it  :lol:

I don't see how a "sticking" or slightly jamming trigger can be a safety feature.

#19 rdlu62

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Posted 01 September 2008 - 05:13 AM

View Postallizard, on Aug 31 2008, 10:43 PM, said:

Shmoogly.. I'm not sure if you got the numbers correct.  

M4 inner barrel length is 363mm and M16 is 509mm.  The inner barrel stops at the end of outer barrel.  Not into the flash hider.

I have the same barrel length as you allizard, my M4A1 is 363mm, my KM4S with 407mm and planning to put 509mm on the KM16. I have the cheaper JBU TB's though  :( I don't know how they compare in performance and accuracy with the more expensive Prometheus but I can say that they do better than the stock barrels. But hey, they're half the cost of Prometheus barrels.  :D

Edited by rdlu62, 01 September 2008 - 05:16 AM.


#20 Shmoogly3

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Posted 01 September 2008 - 08:23 AM

I thought the 509mm fits in an m4, it just goes all the way throught the flash hider and I know that 509mm is the length of an m16s barrel.




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