CYMA CM.618 M4 Carbine w/ Custom Muzzle Brake

  • Tough Polymer
  • Ambi. Mag Release
  • Battery & Charger Inc.

A reconstruction of a well-loved CYMA classic, this time with higher density Polymers which makes this Airsoft Electric Gun much tougher, heavier and a pleasure to hold! Included with battery, charger and P-Mag style high cap, this is the perfect AEG for a beginner looking for a tough bit of kit.

Full description


This Airsoft Electric Gun from CYMA is a revisit of the a very popular rifle, which saw massive success due to the highly sought-after rail system and well-known 'snake head style' muzzle brake which makes this AEG stand out from the crowd of M4-based designs. It has be crafted from a much tougher and higher density Polymer than before, which not only makes it more solid, but adds some realistic weight without making it too unwieldy for a days' Airsofting.

The front of the replica is the party piece; the 'snake head' looking muzzle brake which offers more than just devilish good looks. It adds four points of medium-length 20mm RIS rails for all sorts of accessories, and doubles up as a hand-stop to help you achieve a super stable hold over the RIF. The rest of the handguard is an M-LOK design which also has a full-length 20mm rail running down the top of it and to the rear of the receiver, allowing you to install all manner of scopes and sights. On top of the rail sits a pair of Alloy flip-up ironsights which are adjustable for windage and elevation. Inside the dust cover you will find a gear-style HOP adjust which allows you to apply backspin to the BB and increase effective range, especially when coupled with the correct settings and a heavier BB (0.25g+). The receiver features an ambidextrous magazine release which gives you greater flexibility for reloads, and will suit left handed players much more. The offside magazine release has an extended paddle to make it easier to reach and use. The rear of the replica features an Alloy buffer tube with an ambidextrous sling plate, allowing you to attach a sling from either side of the RIF. Attached to the buffer tube is a six position sliding Crane Stock which is also where the battery is housed and connected to the replica. A Mini Tamiya connector sits inside the buffer tube and allows for the use of Crane Stock Style batteries to power the RIF. The rear of the stock has a rubberised butt pad to improve grip in the shoulder, and also features a QD sling point should you wish to connect a quick release loop.

Included in the box is a EU Pin Charger and 8.4v 1100mAH NiMH battery which is perfect for beginners looking to get into the sport on a budget. The battery won't last as long or provide as great a Rate of Fire as its' aftermarket counterparts so be sure to pick up another if you want to make the most of this RIF. Also included is a Modern Polymer High Cap magazine which is filled with 300 BBs through the top fill window, and wound from the clockwork wheel at the bottom to feed BBs into the RIF.

If you're looking to start Airsoft on a budget, or love the look of the original CM.518 but didn't love the cheaper-feeling Polymer on those models, then the CM.618 M4 Carbine w/ Custom Muzzle Brake is definitely the replica for you.


  • Custom Muzzle Brake
  • 20mm Forward Rails
  • M-LOK Handguard
  • Full-length 20mm Top Rail
  • High Density Polymer
  • Battery & Charger Included
  • Ambidextrous Mag Release
  • Ambidextrous Sling Plate
  • Alloy Flip-Up Ironsights
  • Fully Adjustable Sights
  • Rear Wired / Mini Tamiya
  • Version 2 Gearbox
  • 7mm Bearings
  • Stylish Fire Selector
  • Rubberised Butt Pad
  • Six Position Crane Stock
  • Plenty of Battery Space
  • Modern Polymer Magazine
  • 300rnd Capacity
  • Ideal Starter Gun

Package Includes:

  • CM.618 M4 Carbine w/ Custom Muzzle Brake
  • 300rnd Polymer Magazine
  • 8.4v 1100mAH NiMH Battery
  • EU 2 Pin Charger
  • Cleaning Rod



Weapon Construction External
Weapon Type
Assault Rifle
Over 18 Only Icon
Over 18
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 348fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Included Items
  • Magazine
  • Instruction Manual
  • Battery
  • EU Pin Charger

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.35kg
Weapon Length Collapsed
Length (Collapsed)
Weapon Length Extended
Length (Extended)


Colour Wheel Greyscale
Primary Colour
Black, Tan ,
Construction Icon
Alloy outer barrel assembly, buffer tube, sights and trim. Polymer receiver, handguard, pistol grip and stock.
Weapon Construction External
External Construction
Gearbox Icon
Internal Construction

Weapon Specific

Power Source Icon
Powered By
Blowback Icon
Weapon Platform
AR Platform, M4 / AR15 / M16,
Magazine Style Icon
Magazine Style
STANAG, M4 / AR Platform,
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Configuration Icon
Weapon Configuration
Weapon Scale Icon
Weapon Scale
Suggested BB Weight


Hop-Up Unit Icon
Hop-Up Unit
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Hop-Up Unit Location Icon
Hop-Up Location
Adjustable behind dust cover


Weapon Furniture Icon
  • Railed Handguard
  • Flip-Up Ironsights
  • Railed Receiver
  • Ambidextrous Magazine Release
  • Sliding Stock
  • Ambidextrous Sling Plate
Rail System Icon
Rail System
20mm RIS / RAS , MLOK Rail System,
Weapon Length Extended
Stock Positions
6 Position
Sight Type Icon
Sight Type
Iron Sights
Sling Plate Icon
Sling Options
Buffer Plate , Stock ,

Magazine Specific

Magazine Type
High Capacity, AEG,
Magazine BB Capacity
Approx. 300 Rounds
Magazine BB Fill Method
Fill Window
Magazine BB Fill Location

Electric Gun Specific Information

Gearbox Icon
Gearbox Version
V2 Gearbox
Wiring Icon
Gearbox Wiring
Rear Wired
Battery Specific
Battery Connector
Patrol Base | Icon | Mini Tamiya
Mini Tamiya
Included Battery
Battery Configuration
Battery Type
Battery Voltage
Battery Amperage
Suggested Battery
Suggested Battery Type
Suggested Battery Configuration
Suggested Battery Voltage

Product Testing Data

Notepad Icon
Test Description
Notepad Icon
Tested Using
ASG Blaster 0.20g BBs
Notepad Icon
Test Date

Detailed Power Tests

FPS, using 0.20g BB
Approx. 348fps, using 0.20g BB

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