If you take the trigger guard off, which is really the whole trigger guard, bottom strap, and front gripstrap, you also end up removing at least one delicate leaf spring. I can't remember for sure, but I think there are several other small parts held in place or otherwise supported by this assembly.
Still, that's not nearly as fraught with frustration and danger as removing the hammer and trigger assemblies.
Here's a link to a parts diagram for the Lightning/Thunderer. You can see why they have such a reputation just from the number of parts.
http://images.google.com/imgres?imgu...LD:en%26sa%3DN