No
You can find a replacement firing pin for a Stevens model 87D 22 cal rifle at a gun dealership. You can also find it by contacting the manufacturer.
There were two types of firing pin used on that model. Would need to see the bolt, but we have the pin. gunshop@nctv.com
Use a Marlin 57 firing pin. It's the same rifle, just re-branded for Sears.
Believe that is a Marlin 101. Contact Numrich at their website- gunpartscorp. They list that firing pin for $5 plus shipping,
gun shop, e-gunparts.com, gun shop
No
Numrich Arms
try numrich arms co first,they can be found on the web.
Find a good gunsmith or machinist
A firing pin that is mounted on/in a hammer
Firing Pin Block