Well if it want "bang" consistently then it was a "real gun"
The defensive firearm is a special-purpose piece of safety rescue equipment, designed to extricate a person . . . from the immediate threat of savagely violent crime. It is like the fire extinguisher. . . . Neither piece of equipment will do you any good if you don't know how to use it or are not psychologically prepared to face danger with that gear in your trained hands in a terror situation.
You had work done on a Llama? If you leave them as is when you buy them, you will find that they are reliable little pistols. They aren't something I would shoot in a competition, but I would trust one to defend my life with. There's an old saying: If it ain't broke, don't fix it.