Delta.exe: Signature upgrade

I would like to replace Delta.exe's signature, "Delta Sabre" (40 Melee, Break) with the following signature attack:

Rocket Launcher: 100 Shot {A;Break} 120 points total.
Delta forms a rocket launcher tube on his shoulder, and fires a rocket at one enemy. The rocket launcher is attached to his armor at the shoulder, with a grip and trigger slightly forward of that, though it does lack a loading hatch or sights.