Specna Arms Rock River Arms SA-C12 CORE Carbine

Specna Arms
  • Rotary HOP Unit
  • 6.03mm Tightbore
  • Quick Change Spring

Part of Specna Arms' CORE series, the SA-C12 brings an affordable CQB monster with a Quick Change Spring System to the table, as well as internal quality such as a Rotary HOP unit, Steel Gears and a 6.03mm inner barrel.

Full description


The CORE series of the Specna Arms family of Airsoft Electric Guns offers affordability and quality in one robust package, coupled with internal parts which put jaws on the floor. The Receiver, Stock and Pistol Grip are made of a high quality Nylon Fiber to keep the package lightweight, whilst still maintaining a rigid core for a tough rifle. The outer barrel assembly and handguard are made from Alloy, to ensure that the handguard is tightly locked in place and wobble free.

The rifle is highly customisable, supporting a wide range of aftermarket external parts and accessories thanks to its KeyMod handguard, 20mm Rail Panels, and its huge full length top rail. The top rail is the full length of the rifle, measuring in at a generous 13'' the rail gives you plenty of space to build the optics setups leaving plenty of room for large scopes, as well as holographic and magnifier setups. The rail is 20mm RIS / RAS, the most common type in Airsoft, meaning that most sights and scopes will quickly and easily attach with no fuss. The handguard of the gun measure in at 7'', making the rifle short yet effective, and features KeyMod for attaching modular parts and accessories. If KeyMod isn't your thing then no worries, the rifle comes with three pre-attached 5'' 20mm RIS Rail panels, converting the existing keymod to 20mm for attaching more common Grips, Bipods and Launchers.

Internally the replica features everything people have come to expect and love from a Specna Arms replica, with a quick change spring system, high quality internal parts, with plenty of options for upgrades and plenty of aftermarket part support should something go wrong. The replica features a standard V2 gearbox, commonly found in Airsoft M4, meaning that there is a vast selection of upgrade parts available for this replica, even if it doesn't really need them out the box. Internally the gearbox features parts you would only typically see in more high end replicas, with a full steel gear set for strength and reliability, 8mm slide bearings for a smooth action and the Specna ESA quick change spring system allowing you to quickly increase or decrease the power of the replica with ease.

This rifle is perfect for those Airsofter who are looking for an extremely solid base from which to start them on their way as an Airsoft Skirmisher. The Specna Arms range of rifles are the hot go-to replicas of this year, and are recommended to new players and more seasoned veterans for their high quality and performance. If you're looking for a CQB rifle which performs great both indoors and out, this is the rifle for you.


  • Part of the Specna Arms Beginner Core Range
  • Branded by Rock River Arms, a real steel shooting company in the US
  • Perfect for CQB game styles due to its compact nature
  • ESA™ Quick spring exchange system
  • Lightweight polymer receiver and stock
  • Alloy handguard, buffer tube and internals
  • 250rnd high capacity magazine
  • 13'' 20mm RIS / RAS full length top rail for sights and scopes
  • 8mm slide Bearings
  • 7'' KeyMod modular handguard
  • 3'o clock, 6'o clock, and 9 o'clock KeyMod positions
  • Pre-attached 5'' KeyMod 20mm RIS / RAS Rail Panels
  • Removable Flip-Up Iron Sight set which locks down
  • Extended Mock Charging Handle
  • Charging handle can be pulled back to release the dust cover
  • Finger ridged pistol grip
  • Mock Forward Assist
  • Steel Gear Set
  • Full steel piston teeth
  • Rotary hop-up unit for range and accuracy
  • Precision 6.03mm inner barrel
  • 14mm Counter Clockwise (CCW) threaded outer barrel
  • Removable flash hider to replace with Silencers and Suppressors
  • Front and Rear QD sling points
  • Branded:
    • 'Specna Arms Industries'
    • 'CAGE: 68407'
    • 'PART# 49672380'
    • 'SERIAL# SA2689'
    • '5.56 MM NATO'
    • 'E003553'

Package Includes

  • Rock River Arms SA-C12 CORE Carbine
  • 250rnd High capacity magazine
  • 0.4A NiMh/NiCd Mini-Tamiya Charger
  • 1100mAh Ni-Mh Crane Stock Battery
  • ID Lanyard



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
  • Battery
  • Charger
  • Ironsight Set
  • Stickers
  • ID Lanyard
Skill Level Icon
User Skill Level
Starter, Regular Player,

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.29kg
Weapon Length Collapsed
Length (Collapsed)
Weapon Length Extended
Length (Extended)


Colour Wheel Greyscale
Primary Colour
Black, Tan ,
Colour Wheel Greyscale
Secondary Colour
Construction Icon
Polymer receiver, stock and pistol grip. Alloy outer barrel assembly, handguard and flash hider. 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 Handguard
  • Flip-Up Ironsights
  • Railed Receiver
  • 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 , QD ,


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
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. 310fps, using 0.20g BB

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