PROTECTOR Cylinder Head

The cylinder head designed to prolong gearbox shell life and provide the perfect seal to achieve best results. The shock-absorbing bumper noticeably increases gearbox life and limits the wear of the piston head. Thanks to high-quality aircraft-grade aluminum CNC machining, the Protector Cylinder Head guarantees a precise fit and high tolerances between the nozzle and its guide, eliminating the mid-cap syndrome.


  • Designed especially for standard and high-performance builds
  • Two shock absorbing bumpers of varied hardness, prolonging gearbox shell life
  • Ultra-high quality of aircraft-grade aluminum CNC machining
  • Precise fitting with the nozzle eliminating the mid-cap syndrome
  • High tolerances between the nozzle and its guide
  • No limits in spring power
  • No modification of AEG required
  • Dedicated especially to pros and skilled users


  • All standard AEG cylinders
  • All standard AEG piston heads
  • All Standard V2 and V3 gearboxes
  • All standard O-rings
  • Standard nozzles – recommended diameter 5.40mm
  • Tested on most popular brands: Krytac, Arcturus, Cyma, Specna Arms, King Arms, G&G, APS, G&P, JG, Tokyo Marui, VFC
  • Not compatible with non-standard gearboxes

PROTECTOR Cylinder Head


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