RetroArms CNC Gearbox Shell for HPA V2, QSC

The RetroArms gearbox shell is CNC-milled from AW 7075 T651 duralumin, lightweight yet extremely strong (590 MPa), and is designed exclusively for HPA rifles of the M4/M16 series (version 2).

Replacing internal parts, including the gearbox shell, should be carried out by a qualified technician.

Features

• CNC-milled 7075 T651 duralumin
• Quick spring change system
• For HPA M4/M16 (V2) rifles only
• Not compatible with the MAXX cylinder head

Specifications

• Weight: 135 g

Package Contents

• Gearbox shell
• QSC spring guide
• Screws