Description
Cyma CM357a Short Shotgun (CM357a)
The Cyma CM357a is a short pump-action airsoft shotgun from Cyma’s CM357 series. Cyma is a well-known Chinese manufacturer of affordable replicas, and its CM357 shotguns are popular as an accessible way into shotgun play.
The short configuration makes this a compact, manoeuvrable shotgun that suits CQB and close-range woodland play. If you want the satisfaction of a pump action without the cost or complexity of a gas shotgun, a spring-powered Cyma shotgun is a sensible place to start.
How it works
Pump-action spring shotguns are cocked by working the fore-end, which compresses the spring ready for the next shot. There are no batteries to charge and no gas to buy, and performance stays consistent in cold weather, which makes them a low-maintenance choice for regular play. Please check the manual for the exact loading procedure and the number of BBs fired per shot on this model, as these vary between Cyma shotgun versions.
Getting started
Before your first game, fill the shotgun with BBs as the manual describes, then test it at home with eye protection on to get a feel for the pump stroke and how the BBs group at your usual engagement distances. Work the pump fully and firmly each time: half-strokes are the most common cause of misfeeds on any pump-action replica.
Carrying a spare loaded shell or magazine in a pouch means you can reload quickly when you run dry, which matters with a shotgun because its capacity is lower than that of a typical AEG. Many shotgun players also carry a pistol as a back-up for when they need to reload under pressure.
Handling
The short format keeps the shotgun light and easy to bring into action in tight spaces such as buildings, corridors and dense woodland. Running a pump action takes some practice, but it is very rewarding once you get into a smooth rhythm, and it encourages careful, deliberate shooting.
Key features
- Cyma CM357a short shotgun
- Pump-action operation
- Compact format for CQB and close woodland
- No battery or gas to manage
- Consistent in cold weather
- Affordable way into shotgun play
Compatibility
Use spare shells or magazines specifically listed for the Cyma CM357 series, as feed systems differ between shotgun makers and models. Start with 0.20g seamless BBs, which suit most spring shotguns. If you want to add a sling, torch or sight, check which mounting points your version has before ordering accessories.
Care and maintenance
Wipe the shotgun over after each game, especially after damp days, and run a cleaning rod through the barrel occasionally. Don’t leave the spring cocked when storing the shotgun, as this weakens the spring over time.
Use good-quality seamless BBs and keep the shell or magazine clean and free of grit. Store the shotgun unloaded somewhere cool and dry.
If the pump starts to feel rough, a tiny amount of silicone oil on the external sliding surfaces can help, but avoid oiling the barrel or hop-up area, as oil there affects accuracy. Any internal work is best left to a technician.
Who is it for?
The CM357a suits players who want an affordable, compact pump-action shotgun for CQB and close woodland play, and anyone looking for a low-maintenance secondary or a fun change from their usual AEG.
Please note: BBs are not listed as included. Always wear suitable eye protection, and full-face protection where your site requires it, when using or testing any airsoft replica.










