The top is in 9mm and the bottom in original 5.8mm calibre...
The rare compact version...
The special 5.8mm round (rejected prototype is the one on the left) - might be China's answer to 4.6 x 30mm calibre (small in size and yet with high penetration blah blah blah)...
Mention about this model because I intended to get this one deactivated (future sidearm for Chinese Army phrasing out the Type 54 and reckon no airsoft maker will be interested) and the price=HKD$7100 (The Gun $4600 + Deactivation Fee $2500)...price somehow reasonable in HK's standard but then the catch: a slot of 5mm x 20mm have to be cut "vertically" on the top portion of both sides of the polymer frame (much thinner than airsoft Glock 17 frame though) which will ruin the look completely
...therefore more consideration needed
...