Originally Posted by Argo44
SN 4196. . . . .274 . . . . . .Robust Ideal. - Some sort of button press under-lever release mechanism:
https://www.naturabuy.fr/FUSIL-IDEAL-MANUFRANCE-item-8188148.html
[Linked Image from i.imgur.com]

argo44;

the button that you are evidently referencing in the photo is the fingertip contact point for the sliding safety switch on ideals - and robust-ideals. it's a very simply sheet metal "gate" that slides into notches in the reverse face of the triggers, and keeps them from moving. it's sole function is to prevent trigger(s) movement, and has no effect on other cause of accidental discharges....it's other shortcoming is the fact that it works in the opposite direction from pretty well 100% of other safeties - moves forward to the safe position, and rearward to fire. in my opinion, it's the one and only design feature on an ideal where la manu collaborated with mickey mouse...

best regards,
tom

"it's a poor sort of memory that only works backwards."
lewis carroll, Alice in Wonderland