Answer
Feb 05, 2026 - 08:07 AM
Yes, the crbn upper features dual hopup windows for on-the-fly adjustments. Dual hopup windows allow easier and more precise tuning of your BB trajectory, which is essential for maximizing accuracy and range.
Does it have any special features for hopup adjustment? AirTac Customs GEN 4 HPA CRBN Upper | 128mm / 155mm
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Open Feb 05, 2026 - 08:07 AM
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AirTac Customs GEN 4 HPA CRBN Upper | 128mm / 155mm
AirTac Customs GEN 4 HPA CRBN Upper | 128mm / 155mm Features: Lifetime Warranty for breakage / defects CNC machined 6061 Aluminum Front Thread CNC machined 6061 Aluminum Front Sight 40% Stronger Nylon Frame Genuine Carbon Fiber tube Fiber optic front and rear sights for fast target acquisition Dual ...
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