From a post on G&L Custom Shop's facebook page (8/4/2025):
G&L Custom Shop Rampage 24 in Acid Tiger Burst over alder, Floyd Rose vibrato, birdseye maple neck with Clear Satin finish, abalone dots, Luminlay side dots, Kluson tuners, matching headstock. Built for Eddie's Guitars in St. Louis, Missouri.
The Rampage has no tone controls just a single volume. However the stock models were/are single pickup guitars, so perhaps this one eschewed pickup selection as well. Maybe G&L will provide an answer.
Kit wrote: ↑Tue Aug 05, 2025 8:54 am
Just one control knob? How does this guitar work?
It's a Push/Pull pickup selector. Up is Neck, Down is Bridge.
This is directly taken from George Lynch's pickup configuration and control layout, which the guitar was heavily inspired by, hence the Tiger Stripe graphic I painted on it.