repair acier special de chatellerault double shotgun

Question
s/n50975 need to know how to access firing pins to repair one of the pins. also need to if the part might be available and where. i have worked on many firearms, but not a french shotgun. any help will be greatly appreciated.

Answer
I started a Gun and Tactics youtube channel where I address a lot of gun issues. Here are links:

http://www.youtube.com/channel/UCsgkhimI0MthrMZo-F2zrTQ/videos


http://www.thinklikeahorse.org/All_About_Guns.html



sorry not familiar with this gun, here is link to lots of links about it.

https://www.google.com/search?num=100&hl=en&safe=off&site=&source=hp&q=acier+special+de+chatellerault+double+shotgun&oq=acier+special+de+chatellerault+double+shotgun&gs_l=hp.3...2166.2166.0.2845.1.1.0.0.0.0.122.122.0j1.1.0.les%3B..0.0...1c.Uq4dB4MEUrI