Quote:
Originally Posted by kar120c
I have troubles installing Airsoft Surgeon nozzle and piston head in my Kjw Glock.
I am not sure from what side the piston head should be screwed and is the stock blue piston must be reused inside the new nozzle.
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The flat part needs to face the BBU.
You can't fit the screw properly if you put the rounded side against the BBU.
So...
The rounded side is the "front" side and needs the screw head to rest on it.