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Anyone else having problems with 2rd burst?


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#21 gcw360

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Posted 04 January 2013 - 08:10 PM

 BoobieM4H, on 03 January 2013 - 07:24 PM, said:

Okay folks..after 2 nights of taking this damn kriss aparti found what the problem was. Part #27(trigger bar) was bent at the end where it engages the hammer. If i recall correctly i tried to pull the trigger with the hammer cocked back and the upper/lower was separated..because the full/2rd sear was engaged with the hammer, when i pulled the trigger it of course did not release the hammer and therefore bent the end of it as i pulled pretty firmly..so i heated the trigger bar with a torch and bent it back..the problem with it bent out of shape was there was too much clearance and the trigger bar would not engage hammer as part # 35 was disengaging. The timing was off with the bar bent. Now it works perfectly..so this thread should warn folks:
WHILE HAVING THE UPPER/LOWER APART, DO NOT ATTEMPT TO PULL THE TRIGGER,  UNLESS YOU HOLD DOWN FULL AUTO SEAR (part#27), THEN PULLING TRIGGER, TO RELEASE HAMMER!

( o Y o )
Thanks Boobie....

#22 shangeric12

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Posted 04 January 2013 - 10:46 PM

 Outlaw1995, on 04 January 2013 - 07:48 PM, said:

Hi shangeric, if you are shooting full auto, the magazine gets cold fast. If you are shooting in cold temps, the magazine will get cold fast as well... when the magazine gets cold, the gas gun loses performance and gas efficiency. How long are you charging the magazine for? Try charging it for longer to see if it helps with gas efficiency.

I think that was the problem, I cleaned the gun and lubed up the gun again and it is now functional. Thanks for your help

#23 thefrog

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Posted 09 February 2013 - 03:25 PM

Earlier today while fielding, I have having this issue, I was using two round burst and then every few trigger pulls, i would get a jam due to an extra bb jammed.  I opened up the Vector and examined part 27 and it looked ok.  During lunch , I had a partial mag and here is how it fired.  first trigger pull, 1 shot, ten consequent trigger pulls 2 round burst.  the bolt locked back but there was a final round left in the mag.  The temp is dropping outside so i can not perform any more test.  My concern is, what is causing there to be an extra BB jamming?  I can do more fire test tomorrow when it's warmer.  I had this issue occur this morning during a skirmish and the other day.  I have fired single shot and full auto and it works fine.  Just intermittent jams in two round burst.

#24 R_King91303

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Posted 31 March 2013 - 01:17 PM

Adding to this, I've been able to replicate this error in single fire mode without mechanical failure being a cause.

The error CAN be replicated when upward pressure is applied to the bottom of the extended magazine. The upward pressure on the magazine causes a misalignment with the hammer, so that when the trigger is pulled, the hammer does not hit (or engage with enough force on the  release valve). Once the upward pressure is removed and the magazine slides downward to hits optimal firing position THAT is when the accidental round discharge takes place.

I stumbled upon this when I was trying to zero my gun from a prone position to stabilize my shots. In the prone position I was using the mag as a unipod, this act of the ground pushing up on the mag was causing the misalignment and misfires (when I would get back to one knee).




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#25 wepen935k

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Posted 16 May 2013 - 05:12 PM

Will just keeping the gun on semi prevent this sear problem?

#26 jayrod9727

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Posted 16 May 2013 - 05:29 PM

How about not using the magazine for something it wasn't intended for, its not a unipod its a magazine. I would imagin using most any mag as a unipod could cause a failure. I would not in anyway fault the Kriss for this and it seems almost all the problems that I have heard about  the Kriss are due to the operator doing something they are not supposed to be doing.  :blink:

#27 tiger

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Posted 16 May 2013 - 09:56 PM

Slapping the magazine into the magwell and slapping again the bottom of it to make sure it is seated will damage the magazine catch causing it to move further up when pressure is appiled at the bottom of the mag.

#28 gcw360

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Posted 17 May 2013 - 08:52 AM

 R_King91303, on 31 March 2013 - 01:17 PM, said:

Adding to this, I've been able to replicate this error in single fire mode without mechanical failure being a cause.

The error CAN be replicated when upward pressure is applied to the bottom of the extended magazine. The upward pressure on the magazine causes a misalignment with the hammer, so that when the trigger is pulled, the hammer does not hit (or engage with enough force on the  release valve). Once the upward pressure is removed and the magazine slides downward to hits optimal firing position THAT is when the accidental round discharge takes place.

I stumbled upon this when I was trying to zero my gun from a prone position to stabilize my shots. In the prone position I was using the mag as a unipod, this act of the ground pushing up on the mag was causing the misalignment and misfires (when I would get back to one knee).




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Going prone and using the mag as a uni-pod is a bad idea...Get yourself a new short mag for going prone.

#29 R_King91303

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Posted 17 May 2013 - 09:37 PM

 gcw360, on 17 May 2013 - 08:52 AM, said:

Going prone and using the mag as a uni-pod is a bad idea...Get yourself a new short mag for going prone.

Yea I kno... at that time it was only done to try and get a more stable platform while zeroing. About the short mag, that is a nice solution... ONLY only if the short mags were available for sale at that time :)

In the heat of battle, you got to be able to adapt to the situation presented.. this at times can lead to unorthodox shooting positions. I only brought up my findings more as an FYI, especially for newer players who find themselves in a similar position & not understanding why their gun is malfunctioning :)


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