You do realize that a forward assist has nothing to do with quietly closing the action? It was a useless addition that the US Military had added to Stoners original design so that in the event of a damaged round being chambered, but not allowing the bolt to fully close the operator could then have a device to force the damaged/dirty or otherwise not properly fitting round into the chamber.
ALL semi autos will make noise when the bolt release is operated and the recoil spring slams the bolt into battery.
Holding the charge handle and allowing it to keep the bolt from slamming into battery would be the only way to quietly close the bolt. In a well made assembly there would still be no requirement for a forward assist assembly.
If ultra quiet is the requirement, then a bolt action would be the best option.
We will NOT build crap guns, so the chances of it being even remotely similar to anything norinco, or XCR ish are NIL!