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Jan 14, 2026 - 12:20 PM
This gearbox is available in 10 brand new anodized colors. Anodizing is a process that increases corrosion resistance and allows for vibrant color finishes, which is great for both aesthetics and durability.
How many colors does this gearbox come in? AirTac Customs | ALU CRBN Gearbox
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Open Jan 14, 2026 - 12:20 PM
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AirTac Customs | ALU CRBN Gearbox
AirTac Customs | ALU CRBN Gearbox An essential part reimagined by AirTac Customs - the ALU CRBN Gearbox is a 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...
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