The pamphlet that I have (I think the one Eric refers to), says, for instance:
Albrecht's apprentices, mostly drawn from the boys school, would learn the trade in Bethlehem and once learned would move to serve as journeymen in one of the 5 mission gunshops: Nazareth, Gnadenhutten, Gnadenthal, Friedensthal, Christiansbrunn.
Not sure where to start.
A. Nazareth, Gnadenthal, Friedensthal, and Christiansbrunn were not "missions." They were an integrated economy a few miles north of Bethlehem, populated, like Bethlehem, with mostly ethnic Germans and other whites. Gnadenhutten was a mission station (destroyed in 1755). There is no evidence that it ever had a gunsmith, let alone one trained by Albrecht (who did not have any apprentice before 1755). Friedensthal was just a mill; Gnadenthal was a small farming community next to Christiansbrunn.
B. There was never a "gunshop" at Gnadenthal, Gnadenhutten, or Friedensthal. Nazareth had one only after William Henry opened one in 1780.
C. Christiansbrunn of course had a gunshop--but Albrecht's apprentices did not move there as journeymen. They were trained there! When Albrecht was in Bethlehem (1750-1759), he did not have an apprentice. Presumably, any help he needed in the shop came from the locksmiths/blacksmith, since he worked in their building. There was no free-standing gunshop in Bethlehem. He got an apprentice when he moved to Christiansbrunn in 1759 because he could no longer count on such help.
D. None of Albrecht's apprentices when he worked at Christiansbrunn (he had only one: Oerter) or later in Lititz (Weiss, Henry, sort of Levering) ever worked at a mission station. Kliest, the locksmith with whom Albrecht worked in Bethlehem, did work for a time at the Indian town of Shamokin. [Note: Albrecht did have an apprentice before Oerter, Peter Rice, but he didn't last long and went on to another trade.]
E. Most important: the underlying notion/picture that Albrecht was training a fleet of young gunsmiths who then fanned out to populate Moravian missions is entirely inaccurate and incredibly misleading. He wasn't training many gunsmiths/gunstockers; the few he trained didn't work at any missions, ever.
That's just one sentence.