As mentioned it is possible to make double or even triple safe (or more).
But some of the types of safeties increase the change you won’t have it on (because time to disengage the safety is too long/complicated) or that they will introduce additional failure modes.
For some missions, “unsafe” is better than “too safe” - think one step from gun drawn, finger on the trigger.
This is one of the reasons Glocks are so popular, as the trigger safety is really “easy” to disengage as it’s the same as the mechanism you use to fire.
But it doesn’t protect YOU from being a dumbass. Safeties that do that are dangerous in another way.
But some of the types of safeties increase the change you won’t have it on (because time to disengage the safety is too long/complicated) or that they will introduce additional failure modes.
For some missions, “unsafe” is better than “too safe” - think one step from gun drawn, finger on the trigger.
This is one of the reasons Glocks are so popular, as the trigger safety is really “easy” to disengage as it’s the same as the mechanism you use to fire.
But it doesn’t protect YOU from being a dumbass. Safeties that do that are dangerous in another way.