VERY Simple Old Firing Mechanism by MOSES BABCOCK:

 Now this is a simple firearms lock design ..

The single action hammer is driven/ powered by THE TRIGGER GUARD, which is a leaf spring- fixed in place behind the trigger at the rear end.

 The top extention of the pivoting trigger is the SEAR that engages into the NOTCH or BENT that is cut into the high rear face of the HAMMER below the cocking SPUR.

- That's IT .. TWO moving parts and a spring.

I accept that this is a CAP-LOCK design but it would readily adapt to a cartridge gun via a spring loaded Firing Pin or Striker.

Thanks & acknowledgements to THEFIREARMSBLOG TFB

https://www.google.com/search?q=Moses+Babcock+Rifle+mechanism+images&rlz=1C1ONGR_enNZ933NZ933&oq=Moses+Babcock+Rifle+mechanism+images&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIHCAEQIRigATIHCAIQIRigAdIBCjMyODA0ajFqMTWoAgiwAgE&sourceid=chrome&ie=UTF-8

https://www.google.com/search?q=Moses+Babcock+Rifle+mechanism+images&rlz=1C1ONGR_enNZ933NZ933&oq=Moses+Babcock+Rifle+mechanism+images&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIHCAEQIRigATIHCAIQIRigAdIBCjMyODA0ajFqMTWoAgiwAgE&sourceid=chrome&ie=UTF-8

https://www.thefirearmblog.com/blog/2023/02/22/moses-babcock-action-inspired-muzzleloader-poland/

Years back I was showing the different clever J Rock Cooper design to somebody and they commented "can that be adapted to firing a cartridge?" - Well I didn't see how ..

https://flicense.blogspot.com/2020/05/j-rock-cooper-pistol-keeping-it-simple.html

I know that Police State rules make our Civil Rights hard to maintain - But simple low cost design & manufacture can go a long way to reduce costs for the freedom seekers of USA etc.

What can I say?

Marty K.