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  5. Retro Arms CZ Billet CNC 8mm Ver.2 Gearbox Shell for M4 Series Airsoft AEG Rifles (Model: Split Gearbox / Shell Only)
By Retro Arms

Retro Arms CZ Billet CNC 8mm Ver.2 Gearbox Shell for M4 Series Airsoft AEG Rifles (Model: Split Gearbox / Shell Only)

$149.99
$149.99
Shipping calculated at checkout.
CYMACYMA Sport Complete 8mm Version 2 Gearbox for M4 Series Airsoft AEG (Type: Rear Wired / No Motor)
CYMA Sport Complete 8mm Version 2 Gearbox for M4 Series Airsoft AEG (Type: Rear Wired / No Motor)
Retro Arms CZ CNC 8mm Ver.3 Gearbox Shell for AK / G36 Series Airsoft AEG Rifles with Spring Guide
Retro ArmsRetro Arms CZ CNC 8mm Ver.3 Gearbox Shell for AK / G36 Series Airsoft AEG Rifles with Spring Guide
$149.99
$149.99

Features

  • Precision machined from a block of billet EN AW 7075 T651 aluminum
  • Split gearbox design allows easier installation of internal parts
  • Quick change spring guide system
  • 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.

Version 2 Retro Arms gearboxes feature a quick-change ball-bearing spring guide mechanism, allowing spring swaps in a matter of minutes without complete gearbox disassembly.
Split gearbox means that this gearbox is designed to have a two part upper and lower. An advantages of having a split gearbox is that it's much easier to install internal parts into the gearbox. During setup of a cylinder set, there is no need to remove the whole gearbox from the receiver and only the upper part needs to be removed as it's mounted on the receiver pin.

Manufacturer: Retro Arms CZ

Specifications:

Weight: 142g
Compatibility: For Tokyo Marui, G&P, Matrix and other compatible M4 / M16 Series Airsoft AEG Rifles (Modification may be required depending on brand and model)
Material: CNC Billet EN AW 7075 T651 Aluminum