MwRYum
Major
In that case, it'd be a departure from the current designation system - which the first 3 letters denote its type and role, number denote its year of acceptance into service, a "-1" follows denote it as an improved model of the series; in the case of the carbine version of QBZ95 series, there's a letter B at the end.By naming it 191, it may indicate that it is certified in 2019, the last 1 may be either January, or variant 1 (the regular rifle).
Which makes this QBZ191 an odd bird...we really don't know until there's a proper debut, like a CCTV7 special 30-min programme or something.