CYMA Fatboy 8.5” & 12'' Metal M4 AEG Gel Blaster - CM.619

Product Description

*Please note that restrictions apply to the purchase of Gel Blasters - please refer below for details.

CYMA is bringing the goods with the CYMA CM.619 Fatboy 8.5” & 12'' Metal M4 AEG Gel Blaster!

The CYMA Fatboy 8.5” & 12'' is an AEG m4 gel blaster that is made from Aluminium & high density Polymer - This blaster is the perfect in between weight for realism and differing play styles.

The front of the blaster features an absolutely massive 'Fatboy' KeyMod Rail System that lets you attach rails and accessories at all angles and positions, saving you weight where a rail isn't used. The top of this rail system features an alloy 20mm rail for the addition of optics (or any other 20mm accessory), as almost all scopes you will want to use attach to this kind of rail system.

The blaster also features Alloy in the places you need it such as the barrel and unique looking flash hider, the buffer tube, top rail, fire controls and rear sling plate - basically all the areas where the rifle will take stress. The receiver is also finished in a high density Polymer - so much so that we were initially fooled when it came out the box because it's just that heavy and tough feeling. The flip up iron sights work incredibly well and feature a sight and precision sight depending on your needs in the field, the stock is an adjustable VLTOR styled stock to complete the look. Finally there is an ambidextrous magazine release for those that need it, and the fire selector whilst not ambidextrous is smooth and feels great to use. 

Do not upgrade any part of your toy gel blaster as this will void the warranty. Upgrades refer to pulling any of the blaster apart or opening it up, changing springs or upgrading the battery from 7.4v to an 11.v battery. 



CYMA is among the oldest, most experienced and the largest gel blasters manufacturing facility in the world. Known for their unmatched quality control and professionalism, CYMA is selected to be the OEM of a vast amount of gel blasters products. Durability and performance meets affordability!


  • Durable injection molded polymer receiver
  • 8.5” & 12" Keymod-S style polymer handguard allows for easy integration of popular Keymod spec. accessories
  • 14.5" aluminium alloy outer barrel assembly
  • Enhanced style 6 position VLTOR adjustable stock
  • Ergonomic motor grip, ambidextrous magazine release and enhanced selector switch make fire control and manipulation easy
  • Full length 20mm accessory rail makes use of optics or other 20mm accessories easy
  • Front and rear flip up sights included
  • CYMA version 2 gearbox
  • 14mm CCW thread
  • QD sling mount point at rear
  • Smooth fire controls
  • Rear ambidextrous sling plate
  • Veloctiy: 280-300 FPS


Model: CM.079B(JD) CM.619 Fatboy 8.5” or 12'' Inner Barrel Material: Aluminium 
Colour: Black or Tan  Inner Barrel Length:  
Type: M4 AEG Inner Barrel ID: 7.4mm
Power Source: 11.1v Mini Tamiya Motor Type: 480 Long Shaft
Recommended Gels: TEH Ultra/ AKA Internal Gear Type/Size: 18:1 Metal
Blowback: NA Spring Size: 1.4mm
Ambidextrous: Ambi Mag Release Only Bushing/Bearing: 7mm
Mosfet: No Magazine Type: CYMA M4 Magazine
Materials Used: Metal & Polymer Velocity: 280-300 FPS
Blaster Length: 810mm - 900mm Rate of Fire (ROF):  20
Blaster Weight: 2715g Suitable Hopup: Rizer/ UBAND/ J9/J10


  • 1 x CYMA Fatboy 12'' Metal M4 AEG Gel Blaster 
  • 1 x  CYMA Metal Magazine
  • 1x 11.1v Battery with Mini Tamiya
  • 1x 11.1v USB Charger
  • Glasses
  • Gels
  • Instruction Manual


      Gel Blaster Purchasing Restrictions:

      QLD buyers - we can ship to you directly.

      For all other states and territories, please ensure that you follow the licensing requirements for replica firearms as relevant to your local legislation. We can ship gel blasters to you if you email a copy of your relevant firearms license to and at the point of sale please add your license number in the notes to ensure that your order does not get automatically cancelled and refunded minus a $10 administration and restocking fee.


      or get it now with for $231.00 + 3 payments of $143.00 Learn more

      Maximum quantity available reached.

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