The BSA 28PPedantically, the EM2 was briefly adopted as the Rifle, No. 9 and AFAICT it was home-grown.
Another What If...?
BSA 28P The BSA 28P is an interesting side note to a little known British Small Arms program. The EM2 bullpup is perhaps the best known rifle to be chambered in the .280 intermediate cartridge however, the EM2 was just one of a number of experimental rifles. Along with the EM2, two other...