Maxx Model Hopup Bucking R-Nub 4.5mm (for Maxx hopup series)

  • Compatible with MAXX Hop Up Series
  • Professional installation may be required
  • Designed to fit precisely and provide even pressure over hop-up windows of R-Hopped inner barrels
  • Drop-in replacement
  • Application: For Maxx Model M4 / M16 hopup units
  • Material: CNC Aluminum, Rubber

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