What is special about the fitment?
AirTac Customs GEN 4 HPA CRBN Upper | 128mm / 155mm
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Open Feb 05, 2026 - 08:07 AM
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Answer
Feb 05, 2026 - 08:07 AM
The crbn upper offers perfected drop-in fitment with G&G lowers using a Maxx hopup. "Drop-in fitment" means it is designed to install easily and securely without extra modifications, saving time and ensuring reliability.
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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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