For what I remember the overall contract was first 400, and the second one was stopped after 21 (whereas I'm certain that "1" at the end is the Pattern Room Sample, meaning that 420 were made for the field, and one to be kept as sample), and if that wasn't for another 400 too? Anyway, the result to this is that the rather obscure total production of 421 is not [only] a result of a lack of scopes, but due to a cancelled contract. This though might had been due to a lack of scopes, but also due to supply of No. 4 T sniper rifles (compare with dates when the units were completed).



The Knowledge Libraryicon entry on the Alexander Martin sniper rifles btw speaks of an initial order of 4000 sniper rifles -> https://www.milsurps.com/content.php...A-Sniper-Rifle)