I was originally going to toss this in gunsmithing, but it's kinda mindblowing from a mechanical perspective. So I'm putting it here.
This is the safety switch of a K98 Mauser, which we are about to discuss.
From left to right the positions are "Safety off" "Safety on, bolt unlocked" and "Safety on, bolt locked"
There are 22 mechanical steps in the act of turning off your K98 Mauser's safety. You just flip a switch, a single movement on your part, but here's what's happening mechanically.
K98 Mauser Cycle of Operations
Weapon Condition 3 (Empty chamber, ammunition in magazine)
Step 1: Safety Off
1. Safety switch moves CCW to "Off" position
2. Cocking piece moves rearward
3. Firing pin spring compresses
4. Firing pin move rearward
5. Cocking piece stops on safety switch
6. Firing pin spring stops on cocking piece
7. Firing pin stops on cocking piece
8. Cocking piece moves forward
9. Firing pin spring decompresses
10. Firing pin moves forward
11. Cocking piece stops on safety switch
12. Firing pin stops on cocking piece
13. Firing pin spring stops on cocking piece
14. Safety switch stops on bolt sleeve
15. Cocking piece moves rearward
16. Cocking piece stops on safety switch
17. Cocking piece moves forward
18. Firing pin moves forward
19. Firing pin spring compresses
20. Cocking piece stops on sear
21. Firing pin stops on cocking piece
22. Firing pin spring stops on cocking piece
Safety is off.