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Description
Cartridge: 40×53mm
Action: Advanced primer ignition blowback
Rate of fire: 370 rounds per minute
Muzzle velocity: 252 m/s
Effective range: 1,800 m
The Type 90 is a 40mm belt-fed, blowback-operated, air-cooled, crew-served, automatic grenade launcher developed by Ningjing Munitions Factory. First tested in early 1988 and commissioned in late 1990, it was designed to attack surface targets as well as low-flying aerial targets.

Firing high-velocity 40×53mm grenades at a cyclic rate of 370 rounds per minute, the weapon operates on the blowback principle, which uses the chamber pressure from each fired round to load and re-cock the weapon. Due to its low recoil and light weight, the Type 90 is man-portable and can be mounted on a tripod or vehicle mount. Firing from an open bolt, the rounds are mechanically fed onto the bolt face with the pull of the charging handles. The bolt closes as the trigger is pressed, and the firing pin is released. The recoil blows back the bolt, feeds a new round onto the bolt face, which pushes the expended casing off the bolt face. To provide minimum of parts and maximum reliability of feeding, the Type 90 uses two-stage feed, when each round is first withdrawn rearwards from the belt on the opening stroke of the belt and then placed into T-slot cut in the bolt face; on the closing stroke, the round is already properly positioned on the bolt and is feed straight to the chamber; empty cartridge cases are ejected to the bottom as they are pushed down from the T-slot by the next cartridge.

Photo courtesy of original author. I do NOT own this image.

Description
Cartridge: 40×53mm
Action: Advanced primer ignition blowback
Rate of fire: 370 rounds per minute
Muzzle velocity: 252 m/s
Effective range: 1,800 m
The Type 90 is a 40mm belt-fed, blowback-operated, air-cooled, crew-served, automatic grenade launcher developed by Ningjing Munitions Factory. First tested in early 1988 and commissioned in late 1990, it was designed to attack surface targets as well as low-flying aerial targets.

Firing high-velocity 40×53mm grenades at a cyclic rate of 370 rounds per minute, the weapon operates on the blowback principle, which uses the chamber pressure from each fired round to load and re-cock the weapon. Due to its low recoil and light weight, the Type 90 is man-portable and can be mounted on a tripod or vehicle mount. Firing from an open bolt, the rounds are mechanically fed onto the bolt face with the pull of the charging handles. The bolt closes as the trigger is pressed, and the firing pin is released. The recoil blows back the bolt, feeds a new round onto the bolt face, which pushes the expended casing off the bolt face. To provide minimum of parts and maximum reliability of feeding, the Type 90 uses two-stage feed, when each round is first withdrawn rearwards from the belt on the opening stroke of the belt and then placed into T-slot cut in the bolt face; on the closing stroke, the round is already properly positioned on the bolt and is feed straight to the chamber; empty cartridge cases are ejected to the bottom as they are pushed down from the T-slot by the next cartridge.

Photo courtesy of original author. I do NOT own this image.