Ares Amoeba Pro KM Series OCTARMS Rifle

Product code:
  • EFCS Gearbox
  • Quick Spring Change
  • Full Alloy Construction

New from ARES and building upon their latest Gen3 HONEY BADGERS we are proud to introduce the Pro OCTARMS range M4. Unlike previous AMOEBA variants this M4 platform is all based within an alloy receiver unlike the Polymer predecessors. 

Full description


The change doesn't just end there, the new Pro KM OCTARMS range come in several KEYMOD rail lengths once again alloy with other alloy parts including buffer tube, outer barrel, charging handle, flash hider and more. Another clever features are the lockable body pins resulting in a solid receiver with no wobble. The KEYMOD rail also is secured with 6 bolts for added strength. The whole gun is excellent to hold and shoulder all day long. The gearbox is a tried and tested product from ARES. Featuring their most latest Gen3 BLUE chip you can program your fire modes as mentioned in the Full Description below. Overall an excellent Airsoft RIF for beginners and seasoned professionals looking for a strong, reliable and visually appealing weapon with a lot going on inside too delivering incredible trigger response.  

Other Features: 

  • 7'', 9'', 10'', and 15'' feature a Muzzle Break Style Flash Hider
  • 12'' Variants feature a Sound Enhancing Flash Hider
  • 13'' Variants feature a Standard Bird Cage Style Flash Hider
  • Programmable with Ares Amoeba Electronic Gearbox Programmer EFCS
  • ARES EFCS Gearbox
  • Electronic trigger
  • Alloy ARES etched receiver
  • Adjustable poylmer hop unit
  • Alloy KEYMOD style hand guard
  • Adjustable front and rear sights
  • BLADE style trigger
  • Functional bolt stop release button / catch
  • 2 toned pistol grip with rubber palm and finger contact patches
  • 14mm CLOCKWISE threaded outer barrel
  • Quick spring change
  • Polymer hop-up
  • STANAG style hi-capacity magazine
  • Incredibly solid construction 
  • QD rear sling point included that secures into the stock tube/buffer plate
  • Easy to remove 5 position stock
  • Alloy outer barrel and free float gas block
  • Trigger finger rest plate trigger guard
  • Alloy ejection button
  • Alloy dust cover and charging handle
  • Sights flip up and down
  • Incredible trigger response 
  • Alloy locking receiver body pins
  • 6 point locking/securing bolt keymod rail to upper receiver

Package Includes:

  • Amoeba Pro KM Series OCTARMS Rifle
  • Front and Rear sights
  • Magazine
  • User manual

Special Instructions:

The battery is stored in the stock tube of the gun and as such is required to be an extremely short battery, we recommend the following battery: VP Racing - 7.4v 850mAh 30C LiPo Stick Battery



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. 290fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Screwdriver Icon
Included Items
  • Magazine
  • Instruction Manual
  • Ironsight Set
Skill Level Icon
User Skill Level
Regular Player


Colour Wheel Greyscale
Primary Colour
Black, Tan ,
Colour Wheel Greyscale
Secondary Colour
Two Tone Icon
Pre Two-Toned
Construction Icon
Full Alloy, with Polymer pistol grip and stock
Weapon Construction External
External Construction
Gearbox Icon
Internal Construction

Weapon Specific

Power Source Icon
Powered By
Blowback Icon
Weapon Platform
M4 / AR15 / M16
Magazine Style Icon
Magazine Style
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Patrol Base | Burst
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
Behind Mock Bolt Cover, when Charging Handle Pulled to the Rear.


Weapon Furniture Icon
  • Flip-Up Ironsights
  • AR Buffer Tube
  • KeyMod Handguard
  • Sliding Stock
Weapon Furniture Icon
Variant Furniture
Standard, Sound Enhancing, Muzzle Break Style,
Rail System Icon
Rail System
20mm RIS / RAS , KeyMod ,
Icon Stock Positions
Stock Setting
Weapon Length Extended
Stock Positions
5 Position
Sight Type Icon
Sight Type
Aperture Iron Sight
Sling Plate Icon
Sling Options
Buffer Plate , Stock , QD , Loop ,


Icon Thread Type
Outer Barrel Thread Type
Icon Thread Direction
Outer Barrel Thread Direction