Retro Arms CZ CNC 8mm Ver.3 Gearbox Shell for AK / G36 Series Airsoft AEG Rifles with Spring Guide

• 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 Tokyo Marui, CYMA, JG and other compatible AK / G36 Series Airsoft AEG Rifles (Modification may be required depending on brand and model)
• Material: CNC Billet 7075 T6 Aluminum