MP-133 shotgun has a wooden furniture, with traditional fixed butt stock. It uses traditional pump action with sliding forend that has dual action bars. Locking is achieved by a tilting locking piece, which is installed in the bolt and engages the notch in the barrel extension when in battery. Feed is from tubular under barrel magazine which holds 6 rounds. Receiver of the MP-133 is made from aluminium alloy.
The MP-133 Shotgun is a Pump Action Shotgun. Holding six 12 Gauge Buckshot shells, when fired it shoots multiple pellets at once that spread over distance. The MP-133 can be a powerful weapon in close quarters combat, though its rate of fire is significantly slower than the IZH-43. Can also engage at slightly longer distances.
- The MP-133 Shotgun is modeled after the Russian Baikal MP-133 shotgun, popular for both military and civilian use.