Ottoman matchlock examples.

[estcrh]

Originally Posted by Pukka Bundook

The photos you posted of the breeches at the bottom of page 1, show new 'tin' attached on some of the miquelet examples. This Must be to cover up the slot for the former matchlock serpentine. The new tin-work is not up to the standard of the rest of the gun, so must be there for this reason.
If I had one of these conversions, I'd be prying said tin up a bit and having a look!

When you compare the matchlocks to the miquelets there is a big difference in the locations of the triggers. The matchlock triggers are way farther back, if one of the miquelets were a converted matchlock there would have to be an empty slot were the matchlock trigger was previously located. The old matchlock trigger slot would have to be filled in or covered with a plate, seeing something like this would indicate a matchlock conversion I would think.