My A220 tigger is adjusted very light, and my much more primitive Falke 90 trigger is about the same. Both guns engage the cocking lever correctly, but can a trigger be set too light (safety?), especially on an antique like the Falke?
There is a good article on the Falke 90 by Tom Gaylord (pryamid air) It addressed the trigger.
Last part of Tom's Falke article (links at top to the earlier ones):
https://www.pyramydair.com/blog/2013/01/falke-90-test-part-4/
Yes, some guns - especially "pre-lawyer" older ones - CAN be adjusted to the point of unsafe absurdity, and rely on the common sense of the shooter! But, I've never had a Falke, and don't know your particular details, so can't be more specific.
More important than the lawyers is the human body.
Extended use of too light a trigger creates what is known as "Chicken finger" where you THINK you are increasing the pressure on the trigger blade, but in reality you are not.
And so, you look for lighter and lighter trigger pulls, till your brain and finger completely block you out.
In my 45+ years of coaching and teaching people how to shoot, I've met about a dozen cases, and it is HARD to get out of that hole.
So, my advice (and it is worth as much as you are paying for it, LOL!): do not try to use triggers with less than 8-10 oz of trigger pull.
JMHO
HM
