Big Bang Airguns M4 Carbine w/ Free-Float

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Optic not included!

Caliber: 4.5mm/ .177

Big Bang Air Guns M4 Carbine w/ Free-Float RIS Handguard CO2 Gas Air Rifle


  • Full metal receiver and barrel assembly
  • High-performance CO2 system
  • Adjustable crane-style stock for custom fit
  • Removable magazine core for easy reloading
  • Railed upper receiver for mounting optics, lasers, and other accessories.
  • Quad railed free-float handguard allows for lasers, lights, grips, and other standard picatinny accessories to be mounted.


  • FPS Range: 400-425
  • Length: 765-845mm (Adjustable)
  • Weight: ~2900g
  • Muzzle Threads: 14mm Negative (CCW)
  • Gas system: 12gr CO2 cartridges
  • Fire Modes: Semi automatic, Safe

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