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AirTac Customs ALU CRBN Gearbox

AirTac Customs ALU CRBN Gearbox

$99.99 - $99.99
$99.99
$99.99 - $99.99
$99.99

An essential component reimagined by AirTac Customs - the ALU CRBN Gearbox is a functional and lightweight gearbox for M4 rifle builds, now in CNC Aluminum.

Our CRBN Gearbox enables you to use a CRBN Upper with ANY M4 HPA engine system! It's now possible to use drop-in engines such as the P* F2, Jack, Gate Pulsar, and Inferno in CRBN builds! Sporting an innovative 3 piece design and available in 10 classic colors.

This AirTac Customs ALU CRBN Gearbox includes:

AirTac Customs ALU CRBN Gearbox:

  • Skeletonized Lightweight Design
  • CNC 6061 Aluminum construction
  • 10 Brand New anodized Colors!
  • Removable trigger door for easy trigger tuning and swaps
  • Left/Right alignment screws for full alignment control
  • Up/Down alignment screws for maximum clamping force
  • Allows compatibility of a CRBN Upper with any drop-in HPA engine
  • Does not include selector plate

Compatible with:

  • [CRBN] G&G-style V2 Lowers (SSG1, ARP9, SSG556, etc)
  • Any other V2 lower, upper, and grip.
  • Any standard M4 HPA engine
Choose a Color