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RetroArms CNC M4 cut-off lever is a replacement part for V2 gearboxes used in M4 / AR15 airsoft guns. Its purpose is to mechanically disconnect the trigger contact shuttle and ensure proper cut-off function. The cut-off lever is made by precise CNC machining from high-quality 90MnCrV8 steel and features a modified shape for reliable operation with the most common trigger contacts.

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RetroArms CNC V2 trigger contact shuttle stop screw is a replacement part designed for RetroArms CNC V2 gearboxes. It serves as a stop for the mechanical trigger contact shuttle and helps limit its movement within the trigger mechanism. The screw is intended exclusively for compatible RetroArms parts and is suitable for gearbox servicing or assembly.
RetroArms CNC cut-off lever is a replacement part for V2 gearboxes in M4 / AR15 airsoft guns. During firing, it mechanically disconnects the trigger contact shuttle, ensuring proper trigger mechanism operation. Installation into a CNC V2 gearbox requires an M2.5 screw, which is not included. During installation, it is important that the cut-off lever moves freely on the pin without resistance.
The cut-off lever is designed for V2 gearboxes used in AR15 / M4 airsoft guns.
The part is manufactured by precise CNC machining for accurate dimensions and proper operation in the mechanism.
The cut-off lever is made from high-quality 90MnCrV8 steel suitable for mechanically stressed components.
The cut-off lever is designed to mechanically disconnect the trigger contact shuttle and ensure proper operation of the trigger mechanism.
The shape of the cut-off lever is adapted to provide reliable operation with the most common trigger contacts.
The cut-off lever must move freely on the pin without resistance. Do not use excessive force when tightening the mounting screw to avoid restricting its movement. The screw thread can be secured with threadlocker. The contact points of the cut-off lever should be lightly lubricated with grease. Installation into a CNC V2 gearbox requires 1× M2.5 screw, which is not included.
| Variants | V2 |
| Color | Black |
| Body/receiver material | Metal |
| Gearbox version | V2 |