I think the "standard"-ness was only the projectiles -- which are probably 80% of the cost of a complete cartridge. But yeah, opening a cache and finding yet another type of ammunition your team doesn't need -- not so fun.
20x139mm rounds are used by an autocannon built in South Africa by Demel as a licensed version of the GIAT F2 -- so for the Neopup they were probably able to get their "shorty" rounds relatively cheaply from the factory.
--
Michael
|