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ASG - Bolt action upgrade kit for AW .338 rifles

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A complete cylinder set for the AW.338 airsoft sniper rifle (Ref. 17242 and 17117), it consist of a stainless steel cylinder, aluminum cylinder head and piston with nylon bushings for low friction, an M130 spring and Steel spring-guide with ball-bearings, all assembled, ready-to-go as a drop-in installation. With this upgrade the AW338 will have a muzzle velocity around 130 m/s or 426 fps.
Can be upgraded with a M140 spring ref. 17214.
Set consists of:

  • Steel spring guide with ball-bearing.

  • M130 Spring.

  • Aluminum piston with nylon bushings low friction.

  • Aluminum piston head vented for tight seal.

  • Steel cylinder head fluted with rubber bumper pad.

  • Steel cylinder.


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