Specna Arms CORE Series M4 AEG Rifle Licensed by Rock River Arms M4 Carbine Keymod Black

SA-C09 Black
Out of Stock
• Ultra lightweight fiberglass reinforced polymer receiver
• Licensed Rock River Arms logos
• Nylon fiber furniture
• Metal barrel assembly, flash hider, charging handle, and sling swivels
• ESA™ quick spring change system

Specna Arms CORE Series M4 AEG Rifle Licensed by Rock River Arms M4 Carbine Keymod Black

Introducing the CORE™ line of products from Specna Arms - an permium series of airsoft rifles with exceptional quality and innovation at an attractive price making the CORE™ series suitable for beginners and seasoned airsoft players alike.

The CORE™ series made from lightweight, nylon reinforced polymer and high-quality metals and boasting all the correct markings and a serial numbers as the genuine rifle..

The CORE™ series also features a ESA™ Quick Spring Change System making it possible to rapidly and efficiently adjust the power of your rifle to adapt to the conditions needed on the playing field. No  workshop or special tools needed - all that is required is to remove the stock slide in order to gain access to the spring so that it can be removed without having to pull out or disassemble the gearbox.

All CORE™ series rifles are fully compatible with LiPo and LiFe batteries and includes an M90 spring, making it perfect for operating on a medium range or adapting to close-ranged and indoor operations.

The internal gearbox contains 8 mm slide bearings with shimmed steel gears and a precisely-made rotary type Hop-Up chamber perfectly fit with high quality 6.03 precision barrel.

All CORE™ series rifles are equipped with a 22 mm top RIS rail, an adjustable stock and a standard threaded flash hider that allows for the attachment of a silencer. 

(optic shown in images not included)


  • Aluminum alloy upper and lower receiver with deep laser engraved Rock River Arms (RRA) logos
  • Scratch and weather resistant nano coating
  • Nylon fiber furniture
  • GATE X-ASR Mosfet
  • ESA™ quick spring change system allows the spring to be changed without the need to disassemble your gun
  • Rotary type hopup with 6.03mm tight bore barrel
  • 380 fps spring pre-installed from factory, optional 310 fps (M90) spring included to reduce muzzle velocity
  • New Orion Gearbox with reinforced shell and internals


  • Length: 790mm - 870mm (Adjustable)
  • Weight: 2490g
  • Inner Barrel: TBA
  • Magazine Capacity: TBA
  • Muzzle Velocity: 310~380 FPS (Measured with 0.20g BBs)
  • Thread Direction: 14mm Negative
  • Gearbox: Ver 2 Metal, Fully Upgradeable
  • Motor: Long Type
  • Fire Modes: Semi/Full-Auto, Safety
  • Battery: 7.4v / 11.1v Buffer Tube LiPo Battery Recommended (Wired to rear w/ small Tamiya connector.
  • Battery and Charger not included. We recommend using only high quality batteries and smart chargers)
  • Hopup: Yes, Adjustable
  • Package Includes: Gun, Magazine, Manual
  • Manufacturer: Specna Arms

About Specna Arms:

Specna Arms is a brand manufactured in Hong Kong. Our aim is to deliver high-quality, good-looking and reasonably-priced Airsoft replicas. We are constantly developing both technical and visual aspects of our products to offer our customers the best airsoft experience.

0 stars based on 0 reviews
. . . . .
window.bxAutoSetup = function(){ $('body').append('
'); $('nav ul').eq(0).append('
  • Book Now
  • ') }; window.bxApiInit = function() {bxe_core.init({ bxLang: 'eng', bxExtWin: 'false', }); bxAutoSetup(); };