The Cyma Tactical M870 Operator (Black - CM355L) is a spring-powered, pump-action airsoft shotgun known for its tri-shot firing system, good value for money, and realistic feel. 
Key Features and Specifications
This airsoft shotgun is a full-size 1:1 scale replica of the Remington M870, suitable for both left- and right-handed users due to its ergonomic design. It is valued by users for its reliable performance in close-quarters battle (CQB) scenarios. 
Firing Mechanism: Spring-powered, pump-action, firing three BBs per shot for a spread effect.
Ammunition: Uses a shell cartridge system, with each shell holding 30 BBs (providing 10 shots of 3 BBs each). It is compatible with Tokyo Marui and other leading brands' shells.
Construction: Features a combination of durable high-density ABS polymer for the main frame, stock, and grip, with internal metal parts and an alloy outer barrel, receiver, and trigger guard.
Velocity: Approximately 290-300 FPS (feet per second) using 0.20g BBs.
Length and Weight: The overall length is approximately 1035mm (or 135cm according to some sources) and weighs around 1.6 kg (1630 g).
Sights: Includes a fixed front iron sight and an adjustable rear sight for windage.
Stock: Features an SGA-style custom fixed stock with a rubberised butt pad and adjustable spacers.
Additional Items: The package typically includes one 30-round shell, a speed loader, and a cleaning/jamming rod.