AirTac Customs HPA CRBN Uppers

The newest generation of the CRBN Upper is here! 

CRBN Uppers are a sleek way to turn any build into a lightweight beast, made with genuine carbon fiber for strength and durability.

The Gen 3 has been upgraded to include dual hopup windows, fiber-optic back sights, perfect fitment, and updated threads. Plus, a reduced price to increase accessibility!

All uppers are cross-compatible, so you can swap your tubes and parts between any of your CRBN uppers! 

The Get 3 uppers include:

Gen. 3 CRBN Upper:

• CNC milled Carbon Fiber and ABS Polymer
• Genuine Carbon Fiber tube
• Fiber optic front and rear sights for fast target acquisition
• Dual hopup windows for on-the-fly adjustments
• Perfected drop-in fitment on a G&G lower with a Maxx hopup
• Included Fiber Optics Rods (Green and Red)
• AirTac "POP" Compensator
• Available in Glossy Black, Matte Black, Red, Blue, Purple, Silver, and Gold tube colors

Compatible with:

• Polarstar Fusion Engine (Drop-In)
• F2, Jack, Inferno, N7, Pulsar etc. (Requires CRBN Gearbox)
• G&G Polymer (SSG1, ARP9). Metal (ARP556) and Lancer Tactical lowers (drop in fitment)
• EMG F1 lowers (with modifications)
• MAXX Hop Chambers(ATPRO, M4P, M4A) and Retro Arms hopup chambers (drop in)
• G&G Stock Hopup, Lancer Tactical Stock Hopup, Prowin Hopup (With modifications)
• AirTac Customs CRBN Gearbox