Quote:
Originally Posted by Danke
It sounds like it's doing what mine was; I had to replace the BBU.
The there was a dead O-ring, but instead of going for a 5 year find the right O-ring and get it in there I just rang up KWA USA.
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Same thing happened to mine... I had to replace the BBU
I have 4 USP's btw
The problem cannot be seen because the BBU will look perfectly fine.
I discovered this problem when upgrading my USP Slides to Shooter Design Slides. One gun would shoot fine with the upraded slide while the other was having issues.
I never would have thought it was the BBU because when I pulled it out it looked undamaged so I popped it back in. It was only until I had no other option that I decided to swap BBUs and bam the gun was shooting perfect.
Note: When I say BBU I mean complete internals there. I couldn't pin point the exact part that caused the problem because everything looked perfectly fine.
btw if you love your USP and have no upgraded to an SD slide shame on you
here's how sexy these babies look
