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KWA MKII PTP - Guide Rod Mod

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#1 General Pickle

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Posted 12 May 2013 - 08:20 PM

Hey guys, I just performed this mod and thought I would share it with you to perhaps help somebody else who runs into the issue I had. A while ago my MKII was locking back after each shot, but it wasn't due to the slide lock being pushed up, in fact the hammer was getting stuck under the back of the slide. My first reaction was "What the $*%#?!" but then I realized that it was really quite a simple fix. Rubber part that spaces the washer and the bottom of the guide rod had become worn out after many temperature changes and such so the slide was actually able to move farther back than it is designed to do, thus causing the hammer to go where it should not. I temporarily used a piece of foam and a piece of yogurt lid that I had cut out in the right size to replace the rubber part and while that worked fine these parts wore out as well after about 6 months of hard use. Plus I noticed that my cycle speed and general smoothness of slide action was not as good as I expected it to be sometimes.

Attached File  IMG_0810.JPG   90.89K   25 downloads

After cleaning my MKII today I found that the temporary solution had seen its final game so I looked for new solution, and as it turns out if you have the HNBR o-ring kit you're good to go! The slide action is very smooth now, the slide also hits the back of the action with a nice solid thud rather than the originally somewhat mushy feeling. If you're not having any issues then maybe you should just leave it alone, but if you need to replace the rubber part for any reason the size from the kit is P010A, fits a little loose but you'll see that it actually works well that way.

Hope this helps somebody!

#2 gcw360


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Posted 12 May 2013 - 08:48 PM

Thank you for the post.  I may actually swap out the OEM buffer for the o-ring you used to see how it performs..  Again, thank you.

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