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Specna Arms M4 AEG Rifle FLEX Series M4 M-LOK SBR SA-F03 X-ASR

Specna Arms
SA-F03 X-ASR Black



Specna Arms M4 AEG Rifle FLEX Series M4 M-LOK SBR SA-F03 X-ASR

Specna Arms proudly presents the FLEX ™ line of replicas. An affordable price combined with an innovative quick spring change system, great performance straight out of the box and high-quality components makes this series an excellent choice for both beginners and experienced airsoft players alike.

This new model comes with a GATE X-ASR chip preinstalled. The receiver, the stock tube with the enlarged SF type stock housing the battery, as well as the front in the M-LOK handguard and the pistol grip are made out of polymer plastic reinforced with nylon fiber. Other components, such as the barrel, flash hider and the enlarged reloading handle are made out of metal (all screws, pins, the case ejector flap and dummy bolt are made out of steel). There are markings and a serial number on the receiver.


  • GATE X-ASR MOSFET Preinstalled
  • 8mm Plain Bearings
  • Steel Gear Set
  • Quick Change Spring System
  • Rotary Hop Up Unit
  • 6.03mm Inner Barrel
  • Polycarbinate Piston with Steel Teeth
  • Flip Up Front & Rear Sights


Muzzle Velocity 370-390 FPS
Magazine Capacity 380 rds
Color Black/Black & Tan
Package Includes Gun, Magazine, M90 Low Power Spring

Please Note:

  • Battery and charger are NOT included.