CNC Piston for TM AA-12 / SGR-12

RetroArms CNC piston for Tokyo Marui AA-12 / SGR-12 AEG shotgun
The piston body is made of carbon-reinforced nylon, while the heavily stressed toothed rack is made of high-quality hardened steel. This combination of materials has been selected with regard to the mechanical stresses placed on the piston during operation inside the specific AA-12 gearbox. The package includes two screws with different functions: one secures the steel rack against movement, while the other is used to attach the AA-12 piston head extension. During installation, it is important to use the supplied screw and not to use the original Tokyo Marui self-tapping screw. The piston is intended as a specialised replacement or upgrade part for the AA-12 and cannot be considered a universal AEG piston for standard gearboxes.
Key features

Specifically for Tokyo Marui AA-12 / SGR-12
The piston is designed specifically for the Tokyo Marui AA-12 / SGR-12 AEG airsoft shotgun and its unique internal mechanism.

Carbon-reinforced nylon
The body is made of carbon-reinforced nylon, providing a lightweight and durable foundation for the entire piston.

Hardened steel rack
The toothed rack is made of high-quality hardened steel for use in the mechanically stressed section of the piston.

Rack secured with a screw
One of the supplied screws is used to secure the steel rack against unwanted movement inside the piston body.

Mounting screw for the piston head extension
The second screw is intended for attaching the AA-12 / SGR-12 piston head extension. The original self-tapping screw must not be used during installation.

Technical specifications

Type: Piston with steel rack
Body material: Carbon-reinforced nylon
Rack material: Ha..