CYMA M4 Metal Buffer Tube w/ 7.4v 1300 mAh 20c LiPO Stick Battery & Locking Nut

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Looking for a compact, no hassle battery solution for your retractable stock M4?  This kit has everything you need to and will eliminate problems like tangled wires and cumbersom battery compartments.  This kit is made for rear-wired M4s and replaces the buffer tube with a full metal buffer tube that easily stores the included 7.4v LiPO battery.  Included with the kit are deans connectors which can optionally be installed for better connectivity between the battery and the motor.  The included battery comes with a small tamiya plug and requires a LiPO charger to charge.



  • Metal Buffer Tube
  • Made by CYMA
  • 7.4v 1300 mAh 20C LiPO Battery



  • 7.4V LiPO Battery
  • Metal Buffer Tube
  • Set of deans connectors
  • Set of black and red heat shrink
  • Gearbox shell washer
  • O-ring
  • Buffer tube screw cap
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