Contemporary of the G11 program? A caseless sidearm seems more practical than a rifle they were trying to make into a multirole service weapon imo, way less chance of ammo cook-off
Do you have any more information about this? I always found it weird nobody developed caseless ammo for handguns, where size of the cartridge dictates the size and shape of the grip.
The only thing I could find was https://guns.fandom.com/wiki/Heckler_%26_Koch_NBW
I assume caseless is just too niche for pistols - even if you developed it, without a major military adopting it, it just wouldn't have enough traction for anyone to switch from what they're already using it, and for militaries pistols are a relatively low priority weapon so they wouldn't bother with anything particularly groundbreaking
