QX-04

The QX-04 is a semi-automatic pistol in limited use with the People's Liberation Army (PLA) and various Chinese police departments. The pistol is designed by ChongQing ChangFeng Machinery LTD.CO under China South Industries Group Corporation in June 2010. It is primarily targeted for international market and exportation.

Design Details
The pistol features a series of four different calibers, including: 9×19mm Luger, .45 ACP, 7.62×25mm Tokarev and .40 S&W. By changing the slide, barrel and magazine, it can fire all the four available calibers. This concept can be seen in other designs such as Beretta Px4 Storm. The production variant of QX-04, named CS/LP6 first appeared in public during 8th China International Exhibition on Police Equipment in May, 2011.

QX-04 shares similar structure with QSZ-92 service pistol, yet differs in some aspects. The pistol uses a unique operating principle where in by the barrel is fluted in a opposite twist of the rifling. This fluting causes the pistol when fired to exert opposite rotational force on the barrel there in by locking the front of the slide to the barrel until the fired round leaves the pistol. The action of the QX-04 can be seen as similar to that of the Savage made 1907 Automatic Handgun. It is still unclear as of this time if the weapon is considered a delayed-blowback or a retarded-blowback pistol.