Does anyone have any information regarding when the An xiii pistols were converted to percussion and how long they remained in service and with what units?

There is a Wikipedia reference for the 1840s for their conversion to percussion. However, it confuses the issue by saying that was when those still in service were converted but seems to say they were at the end of their service life about that time. You can interpret that for yourself but my view would be that by the early 1850s, when revolvers were beginning to be more plentiful that the single shot percussion would have been phased out.

I found a discussion on a French forum. The auto translation was very confusing but indicated something happened with the an xiii's around 1823 (I'm guessing percussion conversion ) and that the converted pistols may have seen service into the Second Empire. Very vague--hoping to find something more specific.

After a quick google I turned up the following results.

The MAS pistol of 1850 seems be new built percussion version of the Model XIII, but looks to be all but identical. Hope this link works:

https://books.google.com.au/books?id=qqeOMjr9kqYC&pg=PA30&dq=ouargla+foreign+legion&hl=en&sa=X&ved=0ahUKEwiDqeiLlPfVAhVKVbwKHUAAAkUQ6AEIJjAA#v=onepage&q=ouargla%20foreign%20legion&f=false

The French wikipedia page suggests that they were converted around 1860 to use a Minié ball. The conversion involving a simple change over in the design of the ramrod. It also says that they were in use as late as 1870 for port surveillance (customs service I'm assuming?).

I'm not sure if any of that is helpful, but it looks like military use until at least the mid 1850's and possibly well into the 1860's.

Further to the above post, percussion pistols were issued to cavalry units as late as the Franco-Prussian war, see

https://books.google.com.au/books?id=ZVnuHX_6bG0C&pg=PA151&dq=Perrin+revolver&hl=en&sa=X&ved=0ahUKEwjylsCMzffVAhVMW7wKHXs4CZAQ6AEILDAB#v=onepage&q=Perrin%20revolver&f=false