I can understand the miquelet for the pistol, but what exactly are you referring to as a scottish trade musket? All of the early scottish muskets I've seen had the wonderfully bizarre scotish snaphaunce sort of lock, with lots of little levers... wonderful to look at, but my prototypes #1 and #2 just don't have the little levers in all the right places yet! #3 will be perfect... :rotf:
As far as building the miquelet, Pryor Mtn. Bill Newton's book Flint and Percussion Pistols Patterns has a diagram of how to build a miquelet lock if you have a few tools and a lot of patience... not step by step instructions, mind you, but enough to go by if you want to try it.
marmot