Specna Arms Rock River Arms SA-C01 CORE Carbine

Specna Arms
  • Licensed Design
  • Rotary HOP Unit
  • Quick Change Spring

A seriously well-made replica of a world-famous firearm, the M4A1 platform. High-quality build meets affordable cost with the CORE range of Specna Arms AEGs, which offer the user a tonne of buck for their buck including a lightning fast Quick Change Spring.

Full description


This rifle is part of the CORE range, targeted at beginner Airsoft players who are new to the sport, being a cheaper alternative to the full metal guns these weapons are made from high quality polymers to reduce the overall cost of the weapon without the loss of quality. The weapon features a full polymer external design, except for the outer barrel and internals where the strength is required. This gives the weapon a light feel, but without compromising internal or external quality.

The weapon features a removable top carry handle iron sight which when removed reveals a top 20mm RIS / RAS rail, 20mm being the most common type of Airsoft rail on the market today, giving you plenty of options for aftermarket parts from a wide range of brands. The top rail of the weapon is designed for attaching sights and scopes, as well as red dot and holographic optics. 

The rifle features an adjustable stock, which can be adjusted up to six positions for different sized users and features a rubber butt plate to prevent slippage whilst shouldering the rifle. The stock also doubles up as a battery storage compartment, allowing for larger 9.6v Ni-Mh to fit in, as well as the smaller 7.4v LiPo, giving plenty of opportunity to use the same battery between multiple weapons.

The front of the weapon has a barrel with a removable flash hider which when removed reveals a 14mm Counter Clockwise thread which can be used to attach a wide array of silencers, suppressors or even more advanced tracer units. The hand guard is also removable, which is done by  pulling back on the D-Ring and sliding the parts out of the way. This allows for aftermarket handguards to be attached, or for the tech enthusiast the entire handguard / d-ring and front post can be removed to attach a free float handguard.

Internally the weapon features a fully adjustable hop-up unit, designed to add range and accuracy by adding stability to the shots, and can be adjusted to support a wide range of BB weights. The hop-up is also adjusted by a radial adjuster rather than the standard gear system seen in older AEG allowing for higher accuracy of movement when setting the hop-up. The weapon's gearbox also features 8mm slide bearings and steel gears to enhance the lifespan of the gun, and features Specna Arm's ESA Quick Spring Change System, allowing you to easily and quickly remove the spring and replace it with a stronger or weaker one depending on the FPS limits of your local game site. The spring is accessed via the Buffer Tube, which means that you don't even need to open the RIF to change your spring, making the process roughly 45 seconds. This is perfect for those who want to fill different roles which require FPS changes, as you can have it switched out in a matter of minutes.

This rifle is perfect for those Airsoft Skirmishers who are getting into playing, for those who are looking to get a great beginner rifle, or for those who are looking for a great low cost rifle as a base for modifications.


  • Built by Specna Arms
  • Part of the SA CORE beginner weapons range
  • Electric powered Airsoft AEG
  • Full polymer external design with alloy outer barrel and internals
  • Polymer adjustable hop-up unit for range and accuracy
  • Removable carry handle to reveal a top 20mm RIS / RAS rail for sights and scopes
  • 14mm CCW threaded outer barrel for attaching Suppressors and Tracer Units
  • Front and rear sling loops
  • D-Ring held removable handguard
  • Metal high capacity Hi-Cap wheel wound 300rnd Magazine
  • Adjustable six position Crane Style Stock
  • Rear wired V2 gearbox with Mini-Tamiya connector
  • Batteries stored in the stock
  • Mock charging handle which pulls back to reveal the hop-up unit
  • Finger ridged pistol grip ergonomic design
  • Compatible with a wide range of Airsoft STANAG Magazine
  • Well weight balanced
  • 6.03mm inner barrel
  • ESA™ Quick Spring Change System
  • 8mm slide bearings
  • Steel gears
  • Branded:
    • 'Rock River Arms' (Logo)
    • 'COLONA, IL'
    • 'CAL. 5.56MM'
    • 'LAR-15'
    • 'PAT0010693BAS'

Package Includes:

  • Rock River Arms SA-C01 CORE Carbine
  • Ironsight Carry Handle
  • Magazine
  • Instruction Manual
  • ID Card Lanyard
  • Sticker Set

Special Instructions:

Please note that the mock bolt cover does not lock back on the CORE version of the Specna Arms AEG.



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. 310fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Included Items
  • Magazine
  • Instruction Manual
  • Stickers
Skill Level Icon
User Skill Level
Starter, Regular Player,

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.3kg
Weapon Length Collapsed
Length (Collapsed)
Weapon Length Extended
Length (Extended)


Colour Wheel Greyscale
Primary Colour
Black, Tan ,
Colour Wheel Greyscale
Secondary Colour
Black, Tan ,
Construction Icon
Polymer receiver, stock, pistol grip and handguard. Alloy outer barrel assembly. Steel trim.
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, 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 Receiver
  • Carry Handle
  • Sliding Stock
  • Threaded Outer Barrel
  • QD Sling Point
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
Stock , Handguard ,


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
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
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

Detailed Power Tests

FPS, using 0.20g BB
Approx. 310fps, using 0.20g BB

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