Glued on the metal parts. Had to solve a few minor fit and electronic issues, including swapping out the speaker for the one from the first kit, due to a connection coming loose. I made sure to avoid that with the second speaker by hitting the solder joints with a glob of low-temp hot glue.
All that remains are installing the trigger button and trigger, installing the tenturn knob, and making sure there are no light leaks before gently fitting the wiring and the P1 into place after applying a few drops of glue to the magnets on the front of the P1 to secure it to the P2 (while still making it easy to remove, if necessary).
All that remains are installing the trigger button and trigger, installing the tenturn knob, and making sure there are no light leaks before gently fitting the wiring and the P1 into place after applying a few drops of glue to the magnets on the front of the P1 to secure it to the P2 (while still making it easy to remove, if necessary).