Reinforcing Gearbox System for M4/M16 Replicas

Reinforcing Gearbox System for M4/M16 Replicas

A reinforcing gearbox system is meant to fill the empty space between the skeleton of the gearbox and the Hop-Up chamber, thus additionally safeguarding the front of the skeleton by transferring part of the forces acting on the body of the replica with each piston’s operation cycle. This allows to prolong the longevity of the gearbox’s skeleton. Installation of this module is also advisable during any significant power tuning.