I recorded this quick video showing the stuck feedneck in a PGI FROG a few weeks back. In the video I wedge a rubber screwdriver in the stuck feedneck to remove it.
PGI FROG with stuck feedneck – feedneck removal tool
Here are several photos of an ACI Sports or PGI bottomline regulator broken down. This regulator came off a PGI FROG.
The Sonic kit turns an ACI Griffin semi automatic into an electronic pneumatic. This kit was likely built with Leon Styles of PGI and was sold around 2001.
A detailed explanation and technical information on the Planet Eclipse E1 and E2 Frames for the Worr Game Products Autococker.