It’s about the money.
The company that holds the patent is giving heavily to the D’s.
Its purpose is to make gun ownership such a hassle to keep in compliance with a myriad of laws, and such a risk of becoming a felon by accident or oversight, that people just quit buying or owning them.
“More testing in a wider range of firearms is needed, the researchers said.”
Why am I not surprised?
You’re right and ammo costs a lot more than before already. The international demand for raw materials has caused ammo prices to double from 5 years ago.
Meanwhile, it can be defeated in 30 seconds by rubbing the firing pin with a file
And for it to really work, replacement firing pins would need to become controlled items.