looking for a firing pin
 

For a Mossberg 185 DA numrich midway USA n brownells don't have them any more ideas

Try here, he handles obsolete Mossberg parts. http://www.havlinsales.com/

Do you have the old one? If so it could most likely be repaired. Expensive to have a complete one made. Sounds like that particular one was only made in 1950.

Nope don't have the old one

Try Bob's Gun shop
http://www.gun-parts.com/mossberg/

Have u tried Mossberg themselves?

Yep they said discontinued

you know it won't pay to get one made? normally I would say buy a junker gun to take the part from but yours is to "rare". if it has personal value then get one made but that could run up to $100. you could watch ebay for a complete bolt, it could be cheaper and include the other bolt parts.