AirTac x SpeedQB ALU CRBN Upper (Tracer Bundle) - GLOSS BLACK


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SELECT LENGTH: 128mm - GLOSS BLACK (Tracer Bundle)

All orders with CRBN will ship Dec 30, 2022


A vision brought to life by AirTac Customs and SpeedQB, the ALU CRBN Upper is a minimal, lightweight upper receiver for your V2 HPA builds.

Genuine Carbon Fiber. Black anodized aluminum for a beautiful finish and  durability. Integrated fiber-optic front and rear sights for faster target acquisition. Cross-compatible, so you can swap your tubes and parts between any CRBN Gen 2 uppers.



  • CNC Machined 6061 Aluminum
  • Black Anodized 
  • 8 modular pieces for custom color schemes
  • Genuine Lightweight Carbon Fiber (Gloss or Matte Black)



  • SpeedQB x Acetech Mk.1 Tracer Unit + Black Cap
  • Fiber Optic Sights (Green and Red)
  • Polishing cloth


    Compatible with:

    • Polarstar Fusion Engine (Drop In)
    • Any V2-compatible HPA engine (F2, Jack, Inferno, N7, etc.) (Requires CRBN Gearbox)
    • Designed for G&G polymer lower receivers (SSG1, ARP9). We cannot guarantee fitment with other brands
    • CRBN Uppers are EXCLUSIVELY compatible with MAXX Hopup Chambers (ME, M4P, M4A)
    • Some fitment may be required.


    All orders with CRBN will ship Dec 30, 2022