MaximusMJG gets the GHK PDW Hop-up Adjustment Kit made by the French Company, FG Airsoft, and provides us a howto install video... "So I got the kit in today and I figured Id make this little tutorial video on how to install the Kit to help those out interested. After installing the kit it seemed that the adjustment screw was too long for the kit and I have to shorten the grub screw in order to give me the adjustment that I was pleased with. Thanks for watching."