Gruber never fires a gun, that's the REAL point of the movie.

Nah, travel insurance is for trips, not remote work. That's on you.

The flare trick is where it finally clicked for me too, but the real money move is using the horn to shape the inside of a bend. You can work the metal from the outside and the horn pushes right back, so you get a clean radius without crushing the pipe. Once you start doing that, you stop reaching for a separate mandrel or a wood block. It turns the horn into a second hand that never gets tired. That demo guy probably saved you a couple hundred bucks down the road.