It was canx in part because the York system used somehthing called an ADEWS, a SLC-32 on a stick - or a bullet magnet.
Using a high power jammer on the ground in todays modern warfare is - well, stupid. SO the whole York system was dumped. I got to play with the EW/ESM part of the ADEWS - kinda cool for training, but fatal in a real battle.
And almost totally useless in an age where missiles and artillery can take a target out well outside of gun range. The Sgt. York came into this conversation because I mixed up the York and the M163, which was a gatling on a chasis. The originator of this thread was thinking it would be a good idea to put a gatling into an urban combat zone, but I disagree.
However, them twin 40's would do a good job, I think.
The Swedish seemed how to fit Bofors (there standard forty) in modern AA and ground support and are cutting edge on design! It has been done!