Introducing the Gen 5 HPA CRBN Uppers - a new level of lightweight style! HPA CRBN Uppers are a sleek way to turn any build into a lightweight beast, made with genuine carbon fiber for strength and durability. Our fifth generation proudly sports a Skeletonized Carbon Fiber tube as well as a new 205mm inner barrel length!. The HPA CRBN Uppers feature dual hopup windows, fiber-optic front and rear sights, perfect fitment, and CNC aluminum parts. All for the same price! All uppers are cross-compatible, so you can swap your tubes and parts between any of your CRBN uppers! This AirTac Customs Gen 5 HPA CRBN Upper Includes: Gen 5 HPA CRBN Upper: Lifetime Warranty for breakage / defects CNC machined 6061 Aluminum Front Thread CNC machined 6061 Aluminum Front Sight 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) 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) and Lancer Tactical lowers (drop in fitment) Metal Lower ARP556, Monk Customs and EMG F1 lowers (with modifications) MAXX Hopup Chambers (ATPRO, M4P, M4A), Retro Arms, and Lancer Tactical hopup chambers (drop in) G&G Stock Hopup, Prowin Hopup (With modifications) AirTac Customs CRBN Gearbox
