Just when I think that I've discovered every exotic Cold War-era Polish weapon system, I stumble upon something new.
Apparently, the Poles were working on a modular rifle system. It would have been able to fire multiple calibers (but mainly a proprietary 7x41mm round) with a few parts swaps, and could be configured as an assault rifle, mag-fed SAW, carbine, and battle rifle. The Soviets put the kabash on it, as they wanted the Poles to pay for the AK-74 license. Those clever Poles still figured out a way to do their own thing, developing, adopting, and producing the just-different-enough wz. 88 Tantal instead.
https://www.forgottenweapons.com/pro...-ak-in-7x41mm/
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