Try Bob's Gun Shop, Royal AR.
Find a good gunsmith or machinist
A firing pin that is mounted on/in a hammer
Firing Pin Block
What should Firing pin protrusion measure?
Like it says, the firing pin rotates as the action cycles.
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By action of the hammer striking the firing pin, forcing it into the primer.
Firing pin is what strikes the back end of bullet igniting propellant
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You can find a firing pin for the ranger at Numerick Gun Parts Corporation.
I am looking for a firing pin for a Crescent Firearm I believe the serial # is 8894
How to replace a firing pin from a Charles Daly 20-gauge semi automatic