Hawk semiauto

 Hawk model SF28WB semi-automatic shotgun, hunting configuration. Note that it uses more common underbarrel tubular magazine.
Image © HawkGroup

 Hawksemi-automatic policeshotgun (18.4 mm Anti-riot gun in Chinese nomenlcature), with boxmagazine and side-folding butt.
Image © Hawk Group

  Hawk bullpupsemi-automatic police shotgun (18.4 mm Anti-riot gun in Chinese nomenlcature), with box magazine.
Image © HawkGroup

Chinese company Hawk Industries produces a line of semi-automatic shotguns forhunting and security / police purposes, which persumably are based on US-made Remington 1100 semi-automatic shotguns (although this information is not yetconfirmed). Civilian semi-automatic models of  Hawk line-up with tubular magazines are sold outside of mainland China under variety of names,often exported through the NORINCO corporation. It apears that versions of the same shotgun, but adapted for a proprietary detachable box magazines are intended mostly to government export sales, as those were demonstrated on several international Military and Police / Security exhibitions. A more compact bullpup version is also produced, and was displayed on several Military and police exhibitions.

Hawk semi-automatic '18.4 mm Anti-riot guns' (18.4mm is a metric equivalent of 12 gauge) are gas-operated self-loading shotguns. Those are unusualin using proprietary detachable box magazines (apparently the same as used in Type 97-1 pump-actionshotguns from same manufacturer). 'Standard' configurationpolice shotguns of this line are fitted with side-folding butt, pistol grip and adjustable rifle-type sights; Bullpup-configured shotguns arefitted with fixed sights integral to the carrying handle. It appears that the bullpup stock is a plastic shell, bolted onto the standard receiver.