There is usually a screw on the top of the receiver in front of the hammer or a pin through the side of the receiver holding the firing pin in.
I have a Eastern Arms (sold by Sears and hardware stores) Manufactured by Iver Johnson as well as others. It is a 16 gauge single barrel shotgun model 1929. The firing pin is removed by cocking the hammer back, there is a set screw at the top of the receiver , when removed the firing pin can be removed from the hammer side;watch for the spring. Installation is the reverse.
Iver Johnson
How to replace a firing pin from a Charles Daly 20-gauge semi automatic
$25-50.00
what's a 12 guage ivory Johnson worth
To replace the firing pin on a Sears 20 gauge model 101.100 shotgun, first ensure the firearm is unloaded and follow the manufacturer's guidelines for disassembly. Typically, you will need to remove the trigger assembly and access the firing pin, which can then be replaced with a compatible part. As for its worth, the value of a Sears 101.100 shotgun can vary significantly based on condition, age, and market demand, generally ranging from $100 to $300. For a more accurate appraisal, consider checking recent sales or consulting a firearms expert.
age Iver Johnson shotgun serial # 33743
50-100 USD
Ivory johnson 16 guage chamion shot gun
$50-$125
Yes
You can get one, or really anything you need for your gun off of www.Numrich.com.