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Retro Arms CNC Gearbox SR25 (8mm) - Quick Spring Change

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Product Details

1x Retro Arms CNC Gearbox SR25 (8mm) - Quick Spring Change

1x Spring Guide Included



  • Precision machined from 7075 T6 billet aluminum
  • Durable anodized finish
  • Reinforcement in key stress points to counter rapid wear from high performance parts
  • Pre-radiused cylinder windows - helps evenly distribute impact force
  • Deeper wire channels along base of gearbox
  • Includes heavy-duty, metal ball-bearing spring guide

Unlike most other gearbox shells on the market, the Retro Arms CZ gearbox shells are precision CNC machined out of a solid block of billet 7075 T6 aluminum giving them unmatched durability and resilience. Combined with reinforcement of key stress points and stainless steel connecting bolts, the gearbox shell has undergone extensive stress tests with M160 springs without any signs of wear.

Compatibility: For A&K, Classic Army, Tokyo Marui and other compatible SR25 gearboxes
Material: CNC Billet 7075 T6 Aluminum

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