Features

Precision machined from a block of billet EN AW 7075 T651 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

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 EN AW 7075 T651 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.

Manufacturer: Retro Arms CZ

Specifications:

Compatibility: For Tokyo Marui SOPMOD M4 New Generation Airsoft AEG

Material: CNC Billet EN AW 7075 T651 Aluminum

Disclaimer: Please use discretion when installing custom parts as fit and compatibility may vary. Some modification may be required. Professional installation recommended.