The Best Sacramento Drone Service Ever! Using Ribcage Mod on Hero 4

Hey guy's I just used a Drone Service locally www.aurumair.us and they did an amazing job! I have a few drones myself but I don't have 333 exemption from the FAA, and because this project was work related I used a service. On a couple of the drones they had what's called a ribcage for the go pro and it let's operator change out lenses thought it was cool and would like one myself but I've never used it....


so my question to the members...anyone used one before, and if so how does it compare to the other systems out on the market that allow lens repositioning? I'm asking these questions because it's not a cheap mod...