I need a firering pin for my Marlin 39a does anyone kone where I can purchase one thanks.

Brownells has them,they have an on-line catalog but you will need to know the year your rifle was manufactured.w/regards

Can also get them from Numrich Arms - Numrich Arms.

I got a "new" model firing pin for my 1948 39a and had to do some fitting, so you might want to call them and get their advice on which one you need.

Or, as stated, Brownells has them for post-'75 models, I believe.