I'm not so sure that's the case. Time will tell I guess. But I thought they'd never come to market with the mags. They did finally.Ha!
Check the other thread that's something like 4 YEARS old by now. He has no interest in ever bringing these to market. Someone else might step up someday but I doubt it. Personally, I'd much rather see a polymer version of the cast receivers that looked more in proportion to a UMP. The idea was good, the execution was a little off imo.
Sorry to bust your bubble, but I'd bet a dollar it's never going to happen from HDPS.