Specna Arms Rock River Arms SA-E03 Edge Carbine

Specna Arms
Was £174.99
Save £10.00
  • Quick Change Spring
  • Fully Licensed Replica

A highly realistic replica of the instantly recognisable M4A4 platform, which features Zinc Aluminium externals, excellent internal parts, a quick change spring, GATE MOSFET and fully licensed, engraved trademarks.

Full description


The Specna Arms SA-E03 Edge is another fantastic replica in what is quickly becoming our favourite line of AEGs to ever hit the market. Specna pride themselves on their external build quality, packaging excellent internal parts as a minimum and bringing their products to market at a sensible and realistic price point vs. others. The external build is a gorgeous blend of Zinc, Aluminium, Steel and other Alloys to create one of the most realistic and robust replicas about. The metal work has been Nano Coated to prevent scratching and will protect it's finish longer and better than standard untreated AEGs. The Polymers wherever used (Pistol GripStock and Rail Covers) are high density Polymers which feel much better than your standard tacky plastic you would see elsewhere.

The front of the rifle features a 14mm CCW thread which will allow you to attach suppressors / tracer units once the birdcage flash hider is removed; perfect for those who are trying to achieve a 'Special Forces' look, or would like to extend the inner barrel and need a way of covering the excess barrel. The handguard is the traditional four-point M4A4 20mm setup which is highly identifiable as the "OG M4", and features plenty of rail space for your accessories. The upper receiver has a 20mm rail which is ready for optics and sights, but comes with a rear flip-up ironsight to be used in-conjunction with the built-in front sight. There are two QD sling sockets on the stock for the quick installation of sling loops to facilitate any kind of sling setup. At the rear of the replica is an Ambidextrous Sling Plate which allows for the connection of a sling from either side of the weapon; a very useful component for left handed players who would normally not be catered for. The six-position collapsible Crane Stock is where the battery is housed, and has a Mini-Tamiya connector ready to accept 9.6v NiMHs or a 7.4v LiPo. We personally recommend a 7.4v 2000mAh Crane Stock LiPo. To access the battery compartment, simply squeeze the two tabs holding the rubberised butt pad in place, which will remove and reveal the battery space behind.

Internally, the SA-E03 Edge contains some potent parts which are a cut above what you would get inside a standard AEG. Inside the gearbox you will find a reinforced Polymer piston with a Steel rack, which reduces wear on the piston and massively increases the shooting you can before a service is needed. An O-Ring sealed nozzle, double O-Ring sealed Cylinder Head and Piston Head which creates a tight air-seal, which again will lengthen how long you rifle holds its' Factory FPS. To round it all off the rifle features a set of Steel Gears and 8mm bearings which ensure smooth operation, and longer life due to the higher quality materials used. Rounding off the package you have a Rotary Hop Unit which is a design that allows for much more precise and effective HOP adjustments, to increase range, and also a precision  6.03mm inner barrel which keeps BB trajectory more stable for longer. The GATE X-ASR MOSFET inside will protect your electrical components, improve lifespan of the trigger and also offers some basic fault diagnosis with the onboard LEDs. The ESA™ quick change spring system makes changing the main spring a couple of seconds once the gearbox is removed, and makes this rifle ideal for those who like to tinker, or for those who like to switch between roles and need different output velocities from their rifle.

If you're looking for a replica which is as instantly recognisable as it is well-built, with a wealth of uprated internal parts and awesome quality of life features like a quick change spring and MOSFET, then the SA-E03 is for you.


  • Fully licensed replica
  • Rock River Arms trademarks
  • Unique serial number
  • 14mm CCW thread
  • Nano Coated finish
  • Hologram authenticated
  • Quick access pistol grip
  • Four point 20mm RIS handguard
  • Full length 20mm top rail
  • ESA™ Quick Change Spring System
  • Rotary HOP unit
  • 6.03mm inner barrel
  • QD sling sockets on stock
  • Ambidextrous sling plate
  • ORION gearbox
  • Ready for up to 140m/s springs
  • Reinforced gearbox
  • Aluminium sealed Nozzle
  • Aluminium double-sealed Cylinder Head
  • Aluminium double sealed Piston Head
  • Steel Gears
  • 8mm Bearings
  • 2 x 125rnd Mid Caps included
  • Rock solid construction
  • Highly realistic replica
  • Engraved receiver
  • Flip-up ironsights

Package Includes:

  • Rock River Arms SA-E03 Edge Carbine
  • 2 x 125rnd Mid Cap Magazines
  • User Manual
  • ID Lanyard
  • Sticker Set
  • Certificate

Special Instructions:

The externals of the replica are metal where they would be on the real world gun. This includes things like the outer barrel, handguard, and receiver. If a real world gun has polymer parts then the gun will still be marked as full metal externals, examples of this would be an M4, where the Stock and Pistol grip are always made from Polymer.



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. 320fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Included Items
  • Instruction Manual
  • Magazine x 2
  • ID Lanyard
Skill Level Icon
User Skill Level
Regular Player

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.7kg
Weapon Length Collapsed
Length (Collapsed)
Weapon Length Extended
Length (Extended)


Colour Wheel Greyscale
Primary Colour
Colour Wheel Greyscale
Secondary Colour
Two Tone Icon
Pre Two-Toned
Construction Icon
Zinc Aluminium, Steel, Polymer, Alloy
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
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 plate when charging handle to the rear


Weapon Furniture Icon
  • Railed Handguard
  • Railed Receiver
  • Sliding Stock
  • Threaded Outer Barrel
  • Ambidextrous Sling Plate
Rail System Icon
Rail System
20mm RIS / RAS
Icon Stock Positions
Stock Setting
Weapon Length Extended
Stock Positions
6 Position
Sight Type Icon
Sight Type
Iron Sights
Sling Plate Icon
Sling Options
Buffer Plate , Stock , Barrel,


Icon Thread Type
Outer Barrel Thread Type
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
Inner Barrel Diameter

Magazine Specific

Magazine Type
Medium Capacity , AEG,
Magazine BB Capacity
Approx. 125 Rounds
Magazine BB Fill Method
Speed Loader
Magazine BB Fill Location

Electric Gun Specific Information

Gearbox Icon
Gearbox Version
V2 Gearbox
Wiring Icon
Gearbox Wiring
Rear Wired
Spring Change Icon
Gearbox Quick Change Spring
Battery Specific
Battery Connector
Patrol Base | Icon | Mini Tamiya
Mini Tamiya
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

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